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Because CO is a colorless, odorless, tasteless, and highly poisonous
gas that prevents the blood from carrying oxygen to vital organs, CO
is 200 times more likely to replace oxygen in the blood. It can
endanger lives even at low levels of concentration.
DUAL SENSOR TECHNOLOGY
The SAFE-T-ALERT 35 or 25 series combination CO/Propane Gas
Alarm is an alarm that combines into a single, compact system a
powerful alarm that detects both Carbon Monoxide (CO) and
explosive gases propane (LPG).
The 35 and 25 series uses the latest microprocessor technology
combined with two electronic self-cleaning sensors that operate
independently of each other. The combined unit can detect CO and
explosive gases simultaneously.
Operation
When the unit is first powered up, the CO sensor requires a ten (10)
minute initial warm-up period to clean the sensor element and achieve
stabilization. The GREEN LED indicator will flash on and off during the
10 minute warm-up period. The unit cannot go into a CO alarm during
the warm-up period. To test your unit during the warm-up period,
press the test button. See Test Procedure in this manual. After the
warm-up period, the GREEN power ON indicator should glow
continuously. If the ON indicator light does not light, see the section,
Trouble-Shooting Guide, in the user’s manual for further
information. Do not attempt to fix it yourself.
Gas Alarm: When you power the alarm, it has a warm-up period of
approximately 1 minute. This unit cannot go into a gas alarm during
the warm-up period. After 1 minute the alarm can detect explosive gas
and will energize the relay on models 35-742-R and 35-742-R-MS.
Simultaneous CO and Gas Alarms– Because the risk of a
propane gas explosion is generally a more serious danger, your alarm
unit gives the gas alarm a higher priority during simultaneous alarm
condition.
If your unit generates alarms for both Gas and CO at the same time,
the gas LED will flash red and the beeper will sound. The CO LED will
be a solid Red until the CO is ventilated out of the RV, at which time
the LED will return to the Green operational/safe color.
Brownout Protection— The unit can tolerate short power
interruptions and brownouts where the circuit voltage drops as low as
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