SAFE-T-ALERT 65 Series User Manual

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RECREATIONAL VEHICLE (RV)

Carbon Monoxide Alarm

USER’S MANUAL

65 Series Surface Mount Models:

65-541, 65-541-R, 65-541-MS, 65-541-R-MS

65 Series Flush / Recess Mount Models:

65-542, 65-542-R, 65-542-MS, 65-542-R-MS

ATTENTION: This user’s manual contains important Carbon

Monoxide (CO) alarm installation, operation, troubleshooting and

warranty information. Read, follow, and keep this manual for future

reference.

NOTE: If you install or purchase this alarm for another person, give

this manual to that person.

IMPORTANT: This unit must be replaced within five years of its

installation date. This unit has an End of Life (EOL) signal that will

sound after 5 years of use. Record the installation date in the section,

Owner’s Replacement Record, in this manual for future use. The

replacement date indicates the date beyond which the device may no

longer detect carbon monoxide, The device should be replaced.

The electronic CO sensor in your SAFE-T-ALERT

CO alarm is

very sensitive to CO gas. It will not react to most other gases.

WHY EVERY RV NEEDS A 65 SERIES CO

ALARM

Everyone is at risk for carbon monoxide poisoning! Particularly sensitive are

children, pregnant women, the elderly and people with lung or heart disease or

anemia! Carbon monoxide (CO) is an odorless, colorless gas that prevents the

blood from carrying oxygen to vital organs. CO is 200 times more likely to

replace oxygen in the blood. The Consumer Product Safety Commission

(CPSC) recommends using at least one CO alarm located outside of

sleeping areas. For the extra security, locate additional CO alarms in each

sleeping area.

ABOUT THIS ALARM

Because CO is a colorless, odorless, tasteless and highly poisonous gas; it

can endanger lives even at low levels of concentration. The CO Alarm

will alert you to potentially dangerous situations. The following

symptoms may be related to CO POISONING. Discuss these

symptoms with ALL household members and RV guests:

 Mild Exposure: Headaches, running nose, sore or watery eyes, often

described as “flu-like” symptoms.

 Medium Exposure: Dizziness, drowsiness, vomiting.

 Extreme Exposure: Unconsciousness, brain damage and death.

NOTE: Reported cases of CO gas poisoning indicate that while

victims are aware they are not well, they are disoriented. They are unable

to save themselves by exiting the RV or calling for

assistance. Small children and pets may be affected first.

Your SAFE-T-ALERT

Series alarm helps protect your family

members and guests from CO produced while using your RV. CO gas is

produced when any type of fuel is incompletely burned. Potential sources

of CO in and around your RV can include gas or diesel engine exhaust,

portable space heaters, gas stoves and ovens, furnaces, defective engine

exhaust systems, charcoal, portable grills, other nearby RVs, portable

generators, generator exhaust, and other propane-powered appliances. All

are sources of CO.

The following are also sources of CO that may affect your RV:

 Extended operation of unvented fuel burning appliances can build up

high CO levels.

 An idling vehicle in an open or closed garage.

 Temperature inversions can trap exhaust near the ground.

 CO build up can be caused by reverse/negative venting of fuel burning

appliances including; 1) Clogged, loose or faulty stacks or chimneys of

(clothes dryers, furnaces and water heaters, etc.), 2) wind direction

and/or velocity, 3) simultaneous operation of multiple fuel burning

appliances, and/or exhaust fans.

WARNING:

LIMITATIONS OF CO ALARMS

THIS ALARM WILL NOT WORK WITHOUT POWER. Some

reasons for no alarm power; are a blown or missing fuse, broken wire, a

faulty wire connection or circuit breaker, a discharged battery, cut lead

wires, or improper supply (+) or ground (-) connections.

THIS ALARM WILL ONLY INDICATE THE PRESENCE OF GAS

AT THE SENSOR. CO may be present in other areas. MTI recommends

installing CO alarms in all sleeping areas. Do not block or cover the

alarm with any object that can prevent carbon monoxide from

reaching the sensor.

THIS ALARM IS INTENDED FOR USE IN RV's. It is intended for

use inside the RV. It is not designed to measure compliance with

commercial and industrial standards.

THIS ALARM MAY NOT BE HEARD. The alarm’s loudness is

designed to meet or exceed regulatory standards; however, the alarm may

not be heard if alarms are located in remote locations or behind closed

doors. Persons who are hard-of-hearing, have consumed alcoholic

beverages, taken prescription, non-prescription or illegal drugs, may not

hear the alarm.

THIS ALARM IS DESIGNED TO DETECT CARBON MONOXIDE.

THE ALARM IS NOT DESIGNED TO DETECT SMOKE, OR FIRE.

THIS ALARM MAY NOT ALARM AT LOW CO LEVELS It is not

designed to measure compliance with the Occupational Safety Health

Administration (OSHA) commercial or industrial standards. Individuals

with medical problems may consider using warning devices, which provide

audible and visual signals for CO concentrations under 30 ppm.

HOW TO PROTECT YOUR FAMILY

CAUTION- The SAFE-T-ALERT

65 Series combination CO Alarm

is designed to protect individuals from the acute effects of carbon

monoxide exposure . It will not fully safeguard individuals with specific

medical conditions. If in doubt, consult a medical practitioner.

Questions and Answers:

A
Alexis RussellJul 28, 2025
What to do if my SAFE-T-ALERT Carbon Monoxide Alarm signals end of life?
- A
  Angela RyanJul 28, 2025
  If your SAFE-T-ALERT Carbon Monoxide Alarm is signaling the end of its life, press the Test/Reset button to reset it for 72 hours. This can be repeated for up to 30 days. Ultimately, you will need to replace the alarm.
G
Gabriela CaseAug 12, 2025
How to fix a SAFE-T-ALERT 65 Series Carbon Monoxide Alarm with a green operational LED off?
- R
  richardbarnesAug 12, 2025
  If the green operational LED on your SAFE-T-ALERT Carbon Monoxide Alarm is off, check the wire connections, ensure that the wiring is not reversed, verify that the main power is turned on, and inspect the fuse to see if it's missing or blown. If the problem persists, contact customer service.

SAFE-T-ALERT 65 Series Specifications

General

Model	65 Series
Sensor Type	Electrochemical
Alarm Sound Level	85 dB at 10 feet
Alarm Level	70 ppm for 60-240 minutes
Operating Humidity	95% RH
Dimensions	1.5 x 5.5 inches
Compliance	UL 2034