???Features:
Human voice prompt.
High reliable electrochemical sensor.
LCD Displays Carbon monoxide gas concentration (PPM).
DC 9V battery supply.(Battery is not included).
Battery remaining display and low battery notification.
Low current consumption， ultra-long standby time.
Human voice prompt and high reliable electrochemical sensor.
Alarm memory function and auto detect sensor failure.

Specifications:
Power Supply: 9V battery
Sensor type: Electrochemical CO sensor
Temperature: 0~50 →
Relative Humidity: 10%~95%
Detecting level range: 000~999PPM
Sensitive level: 5PPM
Error: +/- 10%
Normal working status: 000PPM
Alarm concentration: 030-999PPM
Battery status: Low battery warning
Dimensions: 110 * 110* 34mm / 4.3 * 4.3 * 1.3in
Weight: 107g / 3.8oz
Package size: 12 * 12 * 4cm / 4.8 * 4.8 * 1.6in
Package weight: 146g / 5.14oz

Notice:
1. The carbon monoxide detector is easy to be effected by the sharp pounding and shock in transit or installation， lead to not work.
2. This is a carbon monoxide detector， can not detect the combustible gas (such as liquefied petroleum gas， natural gas， methane， etc.).
3. Scheduled maintenance: surface cleaning per month， specialist inspection per half year.
4. Do not use the detergent to clean the gas detector， this will damage the gas detector.
5. Do not spray any sprays such as air freshener， hair spray， etc.
6. This product is only used to reduce the accident， cannot make sure every time. Except use our detector in right way， pls pay more attention in your daily life and strengthen safety and security consciousness.

Package List:
1 * Carbon Monoxide Detector
1 * Pack of Screws
1 * User Manual(English)