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The carbon monoxide alarm is the only battery-operated alarm that includes a backlight digital display feature. This key feature adds an advanced level of protection. The battery operated CO alarm includes multiple mounting options, allowing installation on a wall or tabletop.

PRODUCT FEATURES: 

* Motorola IC control, Reliable without false alarming

* Field audio and visible alarming
* Simple installation
* Excellent reliability & high stability 
* Self test function 
* Durable sensor head 
* Less affected by other organic solvent 
* High Accuracy 
* CE and EN50270 Standard

TECHNIQUE SPECIFICATION: 

* Power Supply: 3*1.5V AA batteries

* Sensor: Electrochemical CO sensor 
* Alarm Style: Per EN50291 
* Sensitivity/Alarm Time: 
  Within 60~90 minutes @ 50ppm CO concentration; 
  Within 10~40 minutes @ 100ppm CO concentration; 
  Within 3 minutes @ 300ppm CO concentration 
* LCD Displayer (optional): 3 digits LCD displayer
* Audibility: 85dB ( at 1m distance ), Frequency 3±0.5KHZ 
* Led Indication /Sound Pattern:
  Standby: Green Led flashes once every 30 seconds 
  Alarm: Red Led quickly flashes 4 times with unit chirping every 5 seconds, then repeat, 
* Low-bat Indicator:
  Chirp every 30s as battery lower than 3.3V with green LED flashing and Lb on LCD 
* Mal-function Indicator: Chirp every 30s with green LED out and Err on LCD
* Power consumption: 0.3mW 
* Sensor Life: 5 years 
* Operation ambient: 0 ~ 40, 20% ~ 90%RH 
* Mounting: Wall/Ceiling mounting 
* Dimension 100mm*40mm, Weight: 0.12kg 
* Comply With: CE, EN50291,RoHS,REACH

Parts diagram: 

The CE&RoHS Certificate: