Features:
*LED display with blue back ground light, easy to read.
* Loud alarm sound, the alarm volume reach 85d B.
* Power saving feature:the alarm sound pattern is 4 beeps every 5 seconds for the first 4 minutes. 4 minutes later, it will change to 4 beeps every minutes to save the battery power.
* High reliability sensor design, effectively detect the real-time CO gas & remind people.
* The alarm sound pattern is four short alarm beeps, the red LED will flash while in alarm mode.
* Onechirpevery 30 seconds is an indication that the battery is low & need to be replaced.
* Test/ Reset button to test the unit electronics & verifies proper unit operation & reset the unit during CO alarm.
* Green & red LED lights that indicate normal operation & alarm status.
*3 digits LCD display is optional. Errindicate the unit is malfunctioning; Lbindicate it low battery; 999ppmindicate CO level over 999ppm.
* Compact, lightweight easy to operate.