The FDUIOSPF Carbon Monoxide Detector uses electro-chemical sensing technology to protect families.It is very convenient for us to install and operate.Tests/Reset Button, Green LED Light Indicates Alarm Is Operating Properly, Red LED Light Indicates Dangerous Levels & Alarm Will Sound End Of Life Warning.Low battery signal and "end of life"warning ensures detector is ALWAYS monitoring your safety.

Features:
★Easy installation
★Backlit display
★Test/Reset button
★Alarm memory function
★Power saving function
★Low battery indicator
★Unit end of life warning

Specifications:
Sensor: electrochemical co sensor
Display: LED blue backlight digital display
Low power alarm: a "built" every 30 seconds is a clue
Standby Current: Alarm Current: Alarm tone: 85 decibels
Operation Ambient Condition:5℃~40℃; 20%~90%R.H
Power supply: 2 *AAA batteries (not included)
Size: 2.36in(L)x 2.36in(W)x0.98in(H)
Weight:80g

Package Include:
2 x Carbon Monoxide Alarm
4 x Screws
1 x User Manual

Note:
1.This carbon monoxide alarm is designed to detect carbon monoxide gas. It is Not designed for Smoke detection or ANY Other GAS detection.
2.Before installing the Carbon Monoxide Detector, the batteries must be removed, stripped of their plastic jackets and then reinserted in the Carbon Monoxide Detector.
3.The CO Detector needs to be tested weekly! If you have any questions about the CO Detector, please contact us at the first time and our friendly customer service team will respond to you as soon as possible.