2027 Keystone RV Cougar Sport 2100ML - 1507

2027 Keystone RV Cougar Sport 2100ML

Cougar Sport: For Adventure & Beyond
Cougar Sport is perfect for any active RVer who values Cougar's reputation and longevity. Safe and easy to tow, Cougar Sport serves up more than one might expect by preserving what customers love about the Cougar brand in a smaller, lighter package. Models start in the mid $40's.

HyperCore

HYPERCORE COMPOSITE WALL CONSTRUCTION

Completely inorganic and water-resistant sidewalls.

Completely Inorganic & Water-Resistant Sidewalls
DURABILITY TESTED - Our in-house innovation lab has thoroughly tested HyperCore™
WATER-RESISTANT - With the combination of aluminum framing and composite materials, HyperCore™ is 100% water-resistant
LIGHTER - Between 11% - 28% reduction in wall weight depending on the size of the coach

SOLAR FLEX

TAKE CHARGE OF HOW YOU CAMP

Cougar proudly offer SolarFlex Protect 220, 440i & 660i-L packages

Take Charge of How You Camp
Incredibly versatile and expertly designed, SolarFlex™ is redefining factory-installed solar power, exceeding customer expectations. SolarFlex™ takes the guesswork out of the equation by offering affordable, high-quality RV solar energy systems. Each package is designed to grow with you, allowing owners to easily expand their system with approved, warrantied parts available exclusively through authorized Keystone dealers. To further enhance performance, all SolarFlex™ packages can be upgraded with cutting-edge Dragonfly Energy Lithium-ion batteries—available as a factory-installed option or as an aftermarket upgrade through your dealer.

Security
Intelligently engineered by the experts at the Keystone Innovation Lab. SolarFlex uses best-in-class hardware and configuration options designed specifically for RVers. Fully integrated during the build process, SolarFlex eliminates the patchwork of an aftermarket build and is covered by Keystone’s fully transferable warranties.

Control
Monitor and optimize your solar energy in real-time using the Victron app. 

Protection
Every RV owner knows the sinking feeling of a dead battery. SolarFlex can provide continuous charge, ensuring the operation of 12V systems and avoiding battery depletion and replacement.  

Flexibility
SolarFlex offers four distinctive packages delivering different levels of solar energy. Each package is designed to grow with you—offering easy add-ons for more power collection and storage.   

SolarFlex Ready
Not quite ready for a solar power package? SolarFlex Ready models are prepped to make it easy to add solar components at any time.

EXPAND YOUR SYSTEM
Easily add solar power to RVs prepped with SolarFlex Ready. All parts are available through a Keystone authorized dealer or service center.

ADD SOLAR ENERGY COLLECTION*
Install 1-2 Future Solutions 220w roof panels (KRV part #715053) and 4 mounting feet per panel-KRV #695125 (4" height) is standard and KRV #688657 (5" height) can be used if the solar panel needs to sit over other components.
Add Zamp Solar portable solar charging panels to the pre-wired port
ADD SOLAR ENERGY COLLECTION* + FASTER CHARGING
Install a second 220w Future Solutions panel (KRV part #715053) and 4 mounting feet per panel-KRV#695125 (4" height) is standard and KRV #688657 (5" height) can be3 used if the solar panel needs to sit over other components.
Upgrade from a 15A solar charge controller to a 30Amp solar charge controller (KRV part# 715047)
ADD SOLAR POWER FOR 110V OUTLETS

Install 2000w inverter in inverted prep circuit -- Xantrex (KRV part# 653865) or Magnum (KRV part# 686127) recommended 
*SolarFlex supports a maximum of two panels per roof port.
TECHNICAL SPECIFICATIONS
SOLAR PANEL MECHANICAL SPECIFICATIONS (EACH)

Approximate Dimensions: 39.37"H x 41.34""W X 1.38"
Approximate Weight: 29.76 lbs.
Frame: Anodized Aluminum Alloy
Cable Length: 35.43"L
Number of Cells (Pcs): 66 (6x11)
Hail Impact Test: 227g steel ball dropped from 1M height
Cell Size: 3.27" x 6.59"
Cell Type: Monocrystalline
Connectors: MC4
Encapsulate: EVA
Junction Box: IP68
SOLAR PANEL ELECTRICAL SPECIFICATIONS (EACH)

Maximum Power (Pmax) : 220
Maximum Power Voltage (Vmp): 35.75V
Maximum Power Current (Imp): 6.15A
Open Circuit Voltage (Voc): 44.2V
Short Circuit Current (Isc): 6.28A
Power Tolerance: +/-3%
Maximum System Voltage: 600UL/1000V/ IEC
Module Operating Temperature: -40°C to +85°C
CHARGE CONTROLLER SPECS

Enclosure: IP43 (electronic components); IP22 (connection area)
Protection: PV reverse polarity; output short circuit; over temperature
Standard(s) Listings: EN/IEC 62109-1; UL 1741; CSA C22.2

SolarFlex™ Protect 220
Protect your battery investment and keep voltage-sensitive components operating efficiently with 220-watts of solar on the roof. Designed to grow with you, this package is also prepped for an easy inverter up-fit.

Protect your battery investment and keep voltage-sensitive components operating efficiently with a larger 220-watt solar panel on the roof. Designed with the owner in mind, SolarFlex Protect 220 is a versatile base system that can be easily expanded to fit many different energy needs.

SOLARFLEX PROTECT 220 COMPONENTS
Future Solutions 220-Watt Solar Panel
30A Solar Roof Port with MC4 Connectors & 10 AWG MPPT Solar Charging Circuit
30A 12V Only Victron SmartSolar MPPT Controller with Bluetooth app (upgraded for 2024!)
Inverted 110V Loop Prep with Up to 7 Outlets (inverter not included)
Zamp Solar Sidewall Charge Port with 15A Solar Charging Circuit
Batteries not included

WHAT YOU CAN EXPECT
Keystone's SolarFlex Protect 220 base system will maintain and refill an owner-supplied battery to operate onboard 12v systems including water pumps, lights, USB ports, slides, stabilizers, leveling, 12v refrigerators, iN-Command, and more. This means that you have everything you need to make a stop during your travels, open the slides, prepare a meal or grab a nap. Designed to refill a typical RV battery bank of two group 24 batteries with one day of peak sun.* Bluetooth connectivity provides visibility to the batteries charging state and available energy via the Victron smartphone app.

EXPAND YOUR SYSTEM
SolarFlex Protect 220 is designed to be easily customized at the dealership before you take delivery of your RV or as your solar energy needs change.

TECHNICAL SPECIFICATIONS
SOLAR PANEL MECHANICAL SPECIFICATIONS (EACH)

Approximate Dimensions: 39.37"H x 41.34""W X 1.38"
Approximate Weight: 29.76 lbs.
Frame: Anodized Aluminum Alloy
Cable Length: 35.43"L
Number of Cells (Pcs): 66 (6x11)
Hail Impact Test: 227g steel ball dropped from 1M height
Cell Size: 3.27" x 6.59"
Cell Type: Monocrystalline
Connectors: MC4
Encapsulate: EVA
Junction Box: IP68
SOLAR PANEL ELECTRICAL SPECIFICATIONS (EACH)

Maximum Power (Pmax) : 220
Maximum Power Voltage (Vmp): 35.75V
Maximum Power Current (Imp): 6.15A
Open Circuit Voltage (Voc): 44.2V
Short Circuit Current (Isc): 6.28A
Power Tolerance: +/-3%
Maximum System Voltage: 600UL/1000V/ IEC
Module Operating Temperature: -40°C to +85°C
CHARGE CONTROLLER SPECS

Enclosure: IP43 (electronic components); IP22 (connection area)
Protection: PV reverse polarity; output short circuit; over temperature
Standard(s) Listings: EN/IEC 62109-1; UL 1741; CSA C22.2

SolarFlex™ Discover 440i
An economical yet robust power package that will take you off the grid. A 440-watt array of solar collection, a 2000-watt inverter, and a smart battery monitor create real-time peace of mind.

SolarFlex Discover 440i gives owners who are curious about solar power everything they need to go off the grid. Two panels double the amount of energy capture and an inverter makes that power available to seven compatible 110v outlets in additon to all 12V systems. This economical and robust system will get you off the grid in good conditions with a reasonable (but not endless) energy supply. A smart battery monitor provides real-time visibility to power draw and energy on-hand, which allows you to make informed choices to extend your time away from the generator and shore power.

COMPONENTS
2, Future Solutions 220-Watt Solar Panels and CS2 Solar Cable Splitters
2, 30A Solar Roof Ports With MC4 Connectors & 10 AWG MPPT Solar Charging Circuit
1, 30A 12V Only Victron SmartSolar MPPT Controller With Bluetooth App
1, 2000W Inverter With Built-In Transfer Switch With Up to 7 Inverted Outlets
Inverted 110V Loop Prep for Soft-Start Air Conditioner (inverter not included)
Victron SmartShunt Battery Monitor With Bluetooth App
Zamp Sidewall Charge Port With 15A Solar Charging Circuit

WHAT YOU CAN EXPECT
SolarFlex 440i introduces many of the conveniences of shore power, providing more campsite flexibility and minimizing (or eliminating) the disruption of a noisy generator. Designed for moderate off-grid power usage, this system allows owners to run up to 2000w of 110v powered electronics*, including small kitchen appliances, computers, CPAP machines, and entertainment systems. A 440-watt parallel solar array provides twice the energy collection and charge rate of the SolarFlex Protect 220 system. When paired with the appropriate batteries and good sun, SolarFlex 440i puts dry camping within reach. A Victron Smart Shunt Battery Monitor 500A/50mV connects via Bluetooth to the VictronConnect App on a phone (or tablet) to monitor battery parameters, like state of charge, time to go, historical information, and much more.

SolarFlex 440i is the ultimate platform to grow with you. A second roof port, prep for an additional charge controller, as well as prep to invert the main air conditioner, gives owners the ability to enhance the system for serious boondocking adventures.**

*Microwave outlet is not included on the inverted circuit.

** Second inverter and compatible air conditioner required. See dealer for details.

EXPAND YOUR SYSTEM
SolarFlex Discover 440i is designed to be easily customized at the dealership before you take delivery of your RV or as your solar energy needs change.
ADD SOLAR ENERGY COLLECTION

Connect Zamp portable solar panel to pre-wired port
ADD SOLAR ENERGY COLLECTION + FASTER CHARGING

Install 1-2 additional 220w Future Solutions panels (KRV part# 715053) and 4 mounting feet per panel-KRV# 695125 (4" height) is standard and KRV# 688657 (5" height) can be used if the solar panel needs to sit over other components.
Add a 30A solar charge controller (KRV part# 715047) in the charge controller prep location with PV disconnect (KRV part# 697201). Note: When installing a second solar charge controller, wires to the batteries must also be installed and are not warrantable. Battery wires/cables are not a Keystone part and can be purchased through your dealer.
Add 100 Ah heated Dragonfly Energy™ Lithium-ion batteries – available exclusively through authorized Keystone RV dealers.
ADD SOLAR POWER TO RUN A/C

Add a second inverter (Xantrex - KRV part# 653865 or Magnum - KRV part# 686127) that is large enough to provide power for the A/C unit to the pre-wired A/C loop. In many cases, the air conditioner that comes with your RV can be used when equipped with a Micro-Air Soft Start, Soft Start RV, or similar component. Consult with your dealer for advice specific to your make and model.

SolarFlex™ Outlast 660i-L
Exceptional solar power for the way you camp. 660 watts of solar collection panels and one Dragonfly® 270 Ah lithium energy storage battery deliver sustainable power and convenience even at remote campsites.

Step up to energy independence with SolarFlex Outlast 660i-L. This system includes a best-in-class Dragonfly Energy® Lithium-ion battery and a soft-start air conditioner that is compatible for use with solar power. Owners can run multiple 110v appliances simultaneously—making it ideal for remote workers, gamers, and families. With the hybrid inverter/charger and a Lithium ion battery, users will enjoy ultra-fast recharge times when it’s necessary to connect to shore power to top off the battery bank. Advanced monitoring provides full visibility of energy collection and usage to maximize your time off-grid.

COMPONENTS
2, 30A solar roof ports w/ MC4 connectors & 10 AWG MPPT solar charging circuits
3, Future Solutions 220-watt solar panels & CS3 splitters
50A Victron SmartSolar MPPT charge controller w/Bluetooth app
3000-watt inverter/charger w/ built-in transfer switch (up to 7 inverted outlets)
Soft-start air conditioner
Zamp Solar portable solar panel charge port
Victron SmartShunt battery monitor w/Bluetooth app
VE Smart dongle w/ Bluetooth app
270 Ah Dragonfly Energy heated Lithium-ion battery

WHAT YOU CAN EXPECT
SolarFlex Outlast 660i-L equips campers for extended off-grid stays.* 660 watts of solar collection and a 50A charger will rapidly refill batteries as well as capture and convert more energy on days when conditions are less than ideal. With SolarFlex Outlast 600i-L, owners can use battery power for air conditioning and run multiple 110v components simultaneously, making this an ideal solution for remote workers, gamers, and families. As with any solar energy system, owners should monitor the battery’s charge and adjust energy consumption accordingly.

*Performance will vary based on available sunlight, battery size/type, and power usage.

EXPAND YOUR SYSTEM
SolarFlex Outlast 660i-L is designed to be easily customized at the dealership before you take delivery of your RV or as your solar energy needs change.

TO ADD SOLAR ENERGY COLLECTION + FASTER CHARGING

If your SolarFlex system came with 220w panels you may install 1-2 additional 220w (KRV part# 715053) and 4 mounting feet per panel-KRV #695125 (4" height) is standard and KRV# 688657 (5" height) can be used if the solar panel needs to sit over other components.
If your SolarFlex system comes with 330w panels you may install additional 330w Future Solutions panels (KRV part# 701474)
Add a 50Amp (KRV part# 679078) solar charge controller to the second charge controller prep
Connect Zamp portable solar panels to the pre-wired port
TO ADD POWER STORAGE

Install a second Dragonfly Energy® heated Lithium-ion battery (KRV part# 653851) and parallel cable kit, available exclusively through authorized Keystone RV dealers

SolarFlex™ Outlast Extreme 1320i-L
The gold standard for solar power performance. With 1,320 watts of solar collection and two powerful Dragonfly® 270 Ah lithium energy storage batteries, SolarFlex 1320i-L is the ideal setup for power users looking for extended boondocking adventures.

Built for dry camping pros, SolarFlex 1320i-L is the gold standard for RV solar power performance. This package features max solar collection and Lithium-ion energy storage. Every electrical component and 110v outlet is solar energy ready – including the air conditioners. If energy consumption ever outstrips supply, an intelligent energy management system will restrict power to non-critical components, eliminating tripped breakers. A hybrid inverter/charger allows owners to charge batteries from multiple sources (i.e. shore power, solar array, or a generator) simultaneously.

COMPONENTS
6, 220W Solar Panels and 4 CS3 Solar Cable Splitters
2, 30A Solar Roof Ports With MC4 Connectors & 10 AWG MPPT Solar Charging Circuit
2, 50A Victron Smart MPPT Controller With Bluetooth App
2, 270AH Dragonfly Heated Lithium-Ion Batteries
Victron Multi-Plus 2x120V 3000W Inverter/Charger With Built-In Transfer Switch and All Outlets Inverted
2, Soft-Start Air Conditioners
Victron SmartShunt Battery Monitor With Bluetooth App
Victron GX Touch 50 5" Color Display
Victron Cerbo-S GX
Zamp Sidewall Charge Port with 15A Solar Charging Circuit

WHAT YOU CAN EXPECT:
SolarFlex 1320i-L is the ideal setup for power users looking for extended boondocking adventures. With the right conditions and ultra-fast charging, campers will have a solid power supply to run onboard systems, air conditioning, and appliances. 540Ah of stored energy allows owners to bank energy to power through days with sub-optimal weather conditions. Victron’s CerboGX-S provides complete visibility, control, and energy analysis to maximize your time off the grid.

Another bonus? With SolarFlex 1320i-L your RV can be the ultimate guest quarters. A hybrid inverter allows the coach to operate as if it is on 30A service when plugged into a 10A residential outlet, simultaneously refilling the battery bank with solar and shore power.

EXPAND YOUR SYSTEM
Although the SolarFlex 1320i-L is pretty robust, owners still have options to enhance this package.

TO ADD SOLAR ENERGY COLLECTION + FASTER CHARGING

Connect Zamp portable solar panels to the pre-wired port
TO ADD POWER STORAGE

Install additional Dragonfly Energy® heated Lithium-ion batteries (KRV part# 653851) and parallel cable kit, available exclusively through authorized Keystone RV dealers
TECHNICAL SPECIFICATIONS
SOLAR PANEL MECHANICAL SPECIFICATIONS (EACH)

Approximate Dimensions: 39.37"H x 41.34""W X 1.38"
Approximate Weight: 29.76 lbs.
Frame: Anodized Aluminum Alloy
Cable Length: 35.43"L
Number of Cells (Pcs): 66 (6x11)
Hail Impact Test: 227g steel ball dropped from 1M height
Cell Size: 3.27" x 6.59"
Cell Type: Monocrystalline
Connectors: MC4
Encapsulate: EVA
Junction Box: IP68
SOLAR PANEL ELECTRICAL SPECIFICATIONS (EACH)

Maximum Power (Pmax) : 220
Maximum Power Voltage (Vmp): 35.75V
Maximum Power Current (Imp): 6.15A
Open Circuit Voltage (Voc): 44.2V
Short Circuit Current (Isc): 6.28A
Power Tolerance: +/-3%
Maximum System Voltage: 600UL/1000V/ IEC
Module Operating Temperature: -40°C to +85°C
CHARGE CONTROLLER SPECS

Enclosure: IP43 (electronic components); IP22 (connection area)
Protection: PV reverse polarity; output short circuit; over temperature
Standard(s) Listings: EN/IEC 62109-1; UL 1741; CSA C22.2
DISCLAIMER: All information on this website is the latest available at time of publication approval. Features, floor plans, and specifications are subject to change without notice. Please consult with your Keystone dealer for more current product information and specifications.

HyperDeck™ High-Performance Water-Resistant RV Floor
Another breakthrough from the Keystone Innovation Lab, HyperDeck™ RV flooring is more resilient, stronger and lighter than traditional laminated wood construction - and it resists water and water damage.

HIGH-PERFORMANCE, WATER RESISTANT RV FLOOR
Stronger, lighter and more resilient than traditional wood laminated flooring, Keystone's exclusive HyperDeck™ is an excellent example of how the Keystone Innovation Lab challenges industry norms to build better RV's. By its nature, traditional wood floor construction presents the possibility of taking on water, a watchout for RV owners who need to remain vigilant to keep moisture out of their coaches. Hyperdeck replaces wood with 100% inorganic materials, designed to resist water and water damage. That's peace of mind that's worth its weight in gold.

SIX WAYS HYPERDECK RV FLOORS OUTPERFORM TRADITIONAL LAMINATED PLYWOOD CONSTRUCTION
100% inorganic and water resistant
Fiberglass-reinforced polypropylene layers increase strength and resist soft spots
Reduces flooring weight by up to 25% for easier towing
Less likely to degrade over time
Increased screw retention keeps RV build secure
High density foam and polypropylene construction increases insulation and dampens noise

Cougar Max Turn
Combining focused design and unique product specifications, Max Turn Technology is the leader in optimum turn radius.

MAX TURN™ MAKES TURNING AND MANEUVERING A BREEZE
Keystone fifth wheel RV owners can make tight turns more confidently with Keystone's EXCLUSIVE MaxTurn™ Technology. Developed by the Keystone Innovation Lab, MaxTurn's patented tube frame design combined with a tapered fiberglass front cap provides and additional 8" of turning radius than the standard straight tube design. MaxTurn delivers an expected turning radius of more than 95° without an expensive and difficult to maintain swivel hitch pin.

Key features include:

Single-piece bent tube replaces a welded three-piece frame
Eliminates need for swivel hitch pin and the maintenance that comes with it
8" more turning radius, more than 95°
Greater manueverability and safety
Protects tow vehicle from damage
*Not available on Raptor, Carbon, Fuzion, Fuzion Impact toy haulers or Springdale and Hideout fifth wheels.

Innovation Leadership
These models feature exclusive ground-breaking components and technologies from the Keystone Inovation Lab.

HYPERDECK RV FLOOR

Stronger, lighter and more resilient than traditional wood laminated flooring, HyperDeck challenges industry norms to build better RV's.

A BETTER FIFTH WHEEL CHASSIS

Learn how the Keystone RV Innovation Lab has reengineered the fifth wheel chassis to be stronger, lighter and Built For The Long Haul..

VIDEO HIGHLIGHTS
Rolled 1-piece I-beams eliminate potential welded failure points
Full-width outriggers fully support sidewall weight
Lighter stamped steel crossmembers replace welded rod-and-angle construction
Rotocast 1-piece tanks eliminate seamed and glued failure points
Steel straps prevent tanks from billowing in transit and impinging on the floor
Patented MaxTurn™ bent-tube frame design increases turning radius without welds

12V COLOR-CODED WIRING STANDARD

Learn how Keystone's EXCLUSIVE color-coded 12V wiring is different from conventional RV wiring and why it's a better for both owners and service technicians.

SMART & SIMPLE
Learn how Keystone’s EXCLUSIVE color-coded 12V wiring is different from conventional RV wiring and why it’s a better for both owners and service technicians.

Easy-to-trace circuits help dealer service techs troubleshoot and complete repairs more quickly, saving owner’s time and money.
Clearly labeled wiring helps savvy owners with DIY diagnosis and repair of technical issues.

Features May Include

Exterior

• Individually Engineered Structural I-beam chassis w/ stamped steel cross-members & outriggers
• 2" Rear receiver hitch w/ 4-way connector: 300 lbs. tongue weight, 3,000 lbs. GTW
• Heavy duty 4,400 lbs. axles
• 10-ply E-rated tires with road side assistance
• Custom aluminum luxury wheels and full size spare tire
• Front cap with dotless neon style LED lighting
• AlphaPly roof membrane w/ Limited Lifetime warranty
• Tinted safety glass windows
• Rear observation camera prep
• Reverse warning lights in taillight
• One-piece, heated and enclosed polypropylene underbelly
• Friction hinge entry door
• Extra-Wide entry step with composite step treads
• Full pass through storage w/ slam-latch baggage doors
• Campsite convenience center for utilities that includes power tank fill
• Hot and cold exterior spray port
• Campsite tuned speakers
• Industry best 55 gal. fresh tank capacity
• 50 Amp electric, pre-wired and braced for bedroom A/C option
• Electric awning with gas strut arm LED lighting

Interior

• Tall slide out for added comfort and head room
• Pleated privacy shades
• Residential, shaker style hardwood cabinet doors and drawers
• LED style lighting

Keystone Exclusives

• 5-year limited frame warranty
• 3-year limited structural warranty
• 1-year limited base warranty
• MY KEYSTONE Owners Mobile App
• HyperCore™ Composite Wall Construction with Vixen Fibrogloss™ HIGH GLOSS finish
• HyperDeck™ composite, 100% inorganic and water resistant floor
• GIGGY BOX™ 12v power wiring within a protective housing, includes battery disconnect, patented
• MaxTurn™ Technology designed in frame and fiberglass front cap, patented
• Color-coded unified wiring standard
• Tuf-Lok™ thermoplastic duct joiners
• KeyTV™ multisource signal controller, patented
• Winegard Air 360+ Omni-Directional Rooftop Antenna

Kitchen Features

• Residential hardware
• Seamless, pressed countertops
• Black stainless steel undermount kitchen sink
• High-rise chef’s faucet and sprayer
• Booth dinette w/built in storage

Appliances & Utilities

• Power converter with auto-detect battery recognition
• 40" LED TV
• (2) 30 lb. LP tanks
• Furrion Quick Cool 15K BTU Ducted A/C
• Furrion Quick Cool 15K BTU Ducted Bedroom A/C
• LED HDTV in living area 12V Bluetooth® player with HDMI ARC control
• 0.9 Cu. Ft. Furrion microwave
• 10.6 cu. Ft. 12V Furrion Refrigerator
• 17" Furrion® range w/ Piezo ignition and glass stovetop cover
• Tankless on-demand water heater

Bedroom Features

• King bed w/ underbed storage
• LED reading lights
• Outlets & USB on both sides of bed
• Cable TV / satellite ready
• Full wardrobe w/ 2 large drawers

Bathroom Features

• Seamless, pressed countertops w/ large sink
• Large shower w/ retractable shower door and skylight
• Porcelain foot flush toilet
• Medicine cabinet
• Towel rack
• Residential vanity cabinet with drawers

Weather Protection

• Insulated gooseneck, bulkhead divider, and sealed pin box
• Insulated slide floors
• Two roof attic vents
• PEX plumbing

Safety

• Breakaway switch
• GFI receptacles
• Carbon monoxide detector
• Smoke detector
• Propane gas leak detector
• Fire extinguisher