• --High-precision electrochemical sensor
• --This carbon monoxide detector includes a backlit digital display.
• --The backlit digital display makes it easy to view carbon monoxide levels in the 001-999 PPM (parts per million) range.
• --When the leaked carbon monoxide concentration reaches a given alarm level, the detector LED flashes red and the buzzer sounds an alarm.
• --This product is suitable for villas, factories, shopping malls, warehouses, office buildings, etc.

Features:
--MCU processing and SMT manufacturing technology
--High-precision electrochemical sensor
--3-5 years sensor life
--85dB alarm sound
--LCD display
--Easy installation
--Low battery warning
--Manual test / automatic reset
--CE, Rohs and EN50291 certification
--This carbon monoxide detector includes a backlit digital display. The backlit digital display makes it easy to view carbon monoxide levels in the 001-999 PPM (parts per million) range. When the leaked carbon monoxide concentration reaches a given alarm level, the detector LED flashes red and the buzzer sounds an alarm. This product is suitable for villas, factories, shopping malls, warehouses, office buildings, etc.

Description:
Name: CO Carbon Monoxide Gas Detector Alarm
Power: 3 x AA batteries (not included)
Sensitivity/Alarm Time:
50 ppm in 60~90 minutes;
100 ppm, within 10~40 minutes;
300 ppm in 3 minutes
Quiescent current: <80uA (200uA when the LCD is on)
Alarm current: <80mA
Audibility: 85dB (1m distance), frequency 3±0.5KHZ
Working environment: 0-45°C
Ambient humidity: 20~95%R.H
Alarm output: 85db/1m, 3Khz frequency, red LED light flashes quickly
Static output: Green LED light flashes once every 30 seconds
Low battery warning: "di" beeps every 30 seconds, "lb" is displayed
Size: 100mm x 38mm

Packing list:
1 x carbon monoxide detector
2 x screws
1 x English user manual

Note:
Due to manual measurement, please allow 1-3 cm error, thank you
Due to screen and other objective reasons, there may be a certain color difference, please understand.