1,the side of the door stopper alarm has Sensitivity adjustment switch, toggle switch "Sensitivity" to: H, M, L, is to adjust pressure induction of high, medium and low Sensitivity.

2, when the power switch at the end of the closing door stopper, 120 decibels loud siren will not be activated, can be used as a common antiskid door stopper.

3, no installation, laminated section 9 v batteries, convenient to carry, especially suitable for use, when you travel accommodation can effectively in a strange place to give you the timely report to the police.

Parameters:

1, working voltage: DC 9 v (1 9 v laminated batteries, the factory without a battery)

2, siren loudness: 120 decibels

3, specifications: 14 mm long, 4.5 mm wide, 3.8 mm high

4, total weight: 128 g

5, packing: English neutral double blister packaging

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