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Portable Knock Sensor
Light flashes in response to door knock
Great for bathroom, dorm room, mobile/motor home, etc
Attach to doors with with a wire hanger or velcro (included)
High/low sensitivity & On/Off setting
Uses one 9 volt alkaline battery (not included)
Dimensions: 3-1/4" high, 3-1/4" wide, 2-1/4" deep
One-year manufacturer's warranty |
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