Combination Smoke Detector and Carbon Monoxide Detector Can Detect the threat of these Two Gases.
1. Photoelectric Sensor Detects Smoke, Smoke Detect While Minimizing the false alarms.
2. Carbon Monoxide Detector alarm Using High accurate Electrochemical Sensor, alerts you to Carbon Monoxide Danger. insurance Safety of your life.
3. Suitable for all the Place Possible to Produce Cambo Smoke and Carbon Monoxide, Such as your Home Kitchen, Bedroom, Bathroom, Hotel. Also Useful When you are Enjoying the Barbecue, Using Charcoal Warm yourself, or Putting it in your Parking Garage, etc.

Easy to install
Turn the alarm body counterclockwise and take off the bracket.
Hold the bracket in the installation position as specified in the Recommended Locations, mark installation holes of the bracket with pencil.
Drill the two marked installation holes. Tap the two plastic grommets into holes with hammer.
Mount the bracket to the ceiling by inserting and tightening the supplied screws into plastic grommets
Fix the alarm on the bracket and turn the alarm body clockwise, until fully inserted on the bracket

Working Parameter
1. Sensitivity & Time for CO Alarm:
50ppm, alarming within 90 minutes
100ppm, alarming within 40 minutes
300ppm, alarming within 3 minutes
2. Sensitivity for Smoke Alarm: 0.1~1.0dB/m
3. Standby Current: <80uA
4. Alarm Current: <80mA
5. Operation Ambient Condition: 5~400C, 20~90%R.H

Appearance and Button
1. Green LED: The green LED flashes every 40 seconds to indicate the unit operate properly
2. Red LED: When a dangerous level of smoke or carbon monoxide is detected the red LED will flash and the alarm pattern will sound: The alarm sound pattern is four short alarm beeps for CO alarm and continuous beeps for the smoke alarm
3. One \'chirp\' every 40 seconds is an indication that the battery is low