Nicely designed dual detector. Small and inconspicuous. The bracket is easy to install and the unit clicks in to it on the ceiling (or wall). Perhaps the best feature is that the detector flashes some subtle green LEDs every 35 seconds or so to indicate that the unit is on the job. An excellent alternative to lesser featured and more expensive name brand units.

About Installation site

Need to be installed in living rooms, ceilings, cars or other places where people stay for long periods of time. A better option is to install it in the bedroom, hallway, basement, car or living room.

When installing the alarm, do not place the product near the fire source. Do not install it in the bathroom or in any other place with vapor mist. In addition, do not install it in a place with a lot of smoke to prevent clogging of the machine and will not have any effect on the alarm sensor.

The concentration of carbon monoxide and smoke is smaller than that of air. So,please install the sirens at 0.3~1m below the ceiling.

Easy to install alarm that is suitable for all areas of the home.

Locations, and mark the mounting hole with a pencil.

Drill the two marked installation holes with a 3/16 inch(5mm)drill bit.Tap the two plastic gromments into holes with hammer.

Mount the bracket to the ceiling by inserting and tightening the supplied screws into plastic grommets.

Fix the alarm to the bracket and turn the alarm clockwise until the bracket is completely inserted.