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Independent design ceiling mount
Come with adhesive foam tape, easy installation
More accurate, more reliable, reproducible
Dimension: 10.2 x 3.4cm/4 x 1.3inch
Working Voltage: DC 9V
Normal condition: LED (red) flashes every 43s
Alarm mode: sound/light (countantly)
Battery: 6F22 (DC9V) (Included)
Package Content: 1 x Smoke Detector Alarm, 1 x Adhesive Tape, 2 x Screws
Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures, but not the same performance on different bodies as on the model. Thank you!