Brand New Metal Smart Door Alarm Automatic Announciator Warner Protector - Grey SAL-47971

Brand New Metal Smart Door Alarm Automatic Announciator Warner Protector - Grey SAL-47971

US$ 15.85 Free worldwide shipping!
TinyDeal
Product Features: : Grey smart door alarm The door alarm lets you know when someone is on your premises Principle of work: The ball seat of the smart door protector should be installed on the door, alarm host is installed on the door-frame or indoors The U-buckle buttons up the ball seat -- when turning the U-buckle to a certain angle, the alarm current will be switched When somebody pushes the door, the ball seat will be changed with the door, then spur the U-buckle At this moment, the U-buckle effects as a block and meanwhile starting the combined aural and visual alarm It has three working states: -- Non-working condition -- Working condition of non owner -- Working condition of owner indoors Note: -- when the clamp of the fixed motherboard parallels with the sideline of doorframe, backward 3mm -- Replacing the battery when the sound is weakening Power Supply: DC 4.5V, 3 x AG13 button cells (Button Cell included) Working Current: ≤80mA Alarm Sound Pressure: ≥90dB Alarm Time: About 15 seconds Alarm Host Size (L x W x T): 90 x 80 x 35 mm/ 3.54 x 3.15 x 1.38 in Ball Seat Size (L x W x T): 85 x 70 x 27 mm/ 3.35 x 2.76 x 1.06 in Net weight: 325 g/ 11.46 oz Color: Grey Product Specifications:: Package Contents:: 1 x Alarm Host 1 x Ball Seat 3 x Button Cells 1 x User Manual