The YL-333 Magnetic Antitheft Alarm is an easy to install security alarm system for doors and windows. This battery-operated device works on the principle of magnetic proximity detection. It can ...
Economical circuit of an electronic alarm, notifies you when your door or window is open, is presented here. This circuit wired around the Quad 2-input NAND Schmitt trigger IC 4093 (IC1) can be ...
Wireless security solution to be on display at ISC East The new Vanishing Door/Window Mini Transmitter from HAI is an ultra-thin wireless contact that can blend into any décor. HAI, the leading ...
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