Engineering 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): 4 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: 3 years * Operation ambient: 0 ~ 40, 20% ~ 90%RH * Mounting: Wall/Ceiling mounting * Dimension 100mm*40mm, Weight: 0.2kg * Comply With: CE, EN50291 |