RV Safety Alarms & Fire Equipment Guide

Replacing an RV safety device starts with knowing what it is designed to detect or protect against. A propane alarm, carbon monoxide alarm, combination detector, smoke alarm and fire extinguisher serve different purposes. This reference directory helps you find the right type of equipment and follow model-specific parts guides before ordering.

Which type of RV safety equipment do you need?

Propane / LP

Propane-only alarm

Warns of an LP-gas hazard. It does not replace a carbon monoxide or smoke alarm.

Compare propane models

Carbon monoxide

CO-only alarm

Warns of carbon monoxide, a different hazard from leaking propane.

Compare CO models

Two gases

Combination LP/CO

One listed device with both propane and CO sensing functions; still not a smoke alarm.

View dual-gas models

Separate equipment

Smoke alarm

Warns of smoke or fire conditions according to its listing. Choose an approved smoke alarm separately.

Fire safety information

Original customer identification chart; this is not a wiring or mounting diagram. Follow the device instructions and the requirements applying to your specific RV.

Before replacing an alarm: record its complete manufacturer part number, replacement date, sensing type, wall opening, power supply and mounting method. An alarm that looks similar is not automatically electrically or physically compatible.

Propane-only alarm models and housings

MTI Safe-T-Alert models include compact surface and longer flush mounting forms. The 20-441 and 30-442 examples below do not use the same housing, so matching the faceplate shape and existing mounting is important.

See the MTI propane-alarm dimensions and mounting diagram

20-441-P-BL MTI 20-441-P-BL RV Propane Leak Alarm - Black catalog photograph

MTI 20-441-P-BL RV Propane Leak Alarm - BlackCompact propane-only alarm; 20-441 surface housing.See product and availability

30-442-P-WT MTI 30-442-P-WT RV Propane Leak Alarm - White catalog photograph

MTI 30-442-P-WT RV Propane Leak Alarm - WhiteWhite flush-mount propane alarm; compare 30-442 mounting opening.See product and availability

Carbon monoxide detectors: hardwired versus battery-powered

A hardwired MTI 62-series CO-only alarm and a round BRK battery-operated CO detector have different electrical and mounting arrangements. Check the manufacturer's approved location and replacement instructions.

Open the MTI 62-series and BRK CO-alarm size guide

62-541-BL MTI 62-541-BL Carbon Monoxide Alarm - Surface Mount, Black catalog photograph

MTI 62-541-BL Carbon Monoxide Alarm - Surface Mount, BlackMTI carbon-monoxide-only surface alarm; compare RV supply and mount.See product and availability

1039885 BRK Electronics 1039885 Carbon Monoxide Detector catalog photograph

BRK Electronics 1039885 Carbon Monoxide DetectorBattery-powered round CO alarm; not a hardwired MTI replacement.See product and availability

Combination propane and carbon monoxide alarms

A dual-gas detector is useful when its exact model and installation are suitable for the RV. The 25-742 and 35-742 models shown here are separate flush-mount designs; neither should be assumed to fit an existing wiring harness or wall cutout without checking.

25-742-BL-TR MTI 25-742-BL-TR RV Carbon Monoxide/Propane Alarm - Black catalog photograph

MTI 25-742-BL-TR RV Carbon Monoxide/Propane Alarm - BlackFlush-mounted combination propane and CO alarm with trim.See product and availability

35-742-WT MTI 35-742-WT RV Carbon Monoxide/Propane Alarm - White catalog photograph

MTI 35-742-WT RV Carbon Monoxide/Propane Alarm - WhiteWhite rectangular flush propane/CO alarm; match dimensions.See product and availability

Check whether the old alarm used a relay or controlled a gas shutoff valve. Standard replacement alarms should not be assumed to retain those functions.

Fire extinguishers are a separate safeguard

Compact First Alert extinguishers have specific fire-class ratings. For example, the catalogued AUTO5 and REC5 models are 5-B:C, a flammable-liquid and energized-electrical-equipment classification. That does not establish a Class A rating or replace the need for a smoke alarm.

AUTO5 BRK Electronics AUTO5 First Alert Automotive Fire Extinguisher 1.4 lb UL Rated 5-B:C catalog photograph

BRK Electronics AUTO5 First Alert Automotive Fire Extinguisher 1.4 lb UL Rated 5-B:CCompact automotive extinguisher with a 5-B:C catalogued rating.See product and availability

REC5 BRK Electronics REC5 First Alert Fire Extinguisher 2 lb UL Rated 5-B:C White catalog photograph

BRK Electronics REC5 First Alert Fire Extinguisher 2 lb UL Rated 5-B:C WhiteWhite recreational-style extinguisher with a 5-B:C catalogued rating.See product and availability

Check the actual extinguisher label, suitable fire classes, bracket, accessible installation location and relevant RV requirements.

Pressure testing is professional service work

An LP-gas pressure-test instrument is not a permanently installed detector. The Camco 10389 is a 0–35-inch-water-column test kit for appropriately trained service personnel evaluating the regulated side of a gas system.

See pressure-test kits, gauges and adapters by part number

10389 Camco 10389 Gas Pressure Test Kit – 0–35 in Water Column catalog photograph

Camco 10389 Gas Pressure Test Kit – 0–35 in Water ColumnLow-pressure 0–35 in. WC gas test kit for qualified service work.See product and availability

Safety reminder: If a gas or CO alarm activates, leave the affected area and seek assistance from a safe location. Do not rely on a product comparison guide to diagnose or approve a gas system for use.

For propane-system part identification, see the RV propane regulator and changeover diagram.

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RV Safety Equipment Guide: Propane, CO Alarms, Fire Extinguishers and Test Tools