The circuit employs the functions of reed switches to produce a gate alarm that is powered by a universal AC/DC power supply. The circuit employs the functions of reed switches to produce a gate alarm ...

We are in a digital era! Now we can add some intelligence to our doors and gates without too much investments. Just assemble this little door timer circuit built around a few cheap and simple ...

Commuters trying to escape a crowded subway exit bottleneck have come to accept those abominable emergency door alarms as an infuriating fact of life. But the New York City Transit Riders Council says ...

Offering the ultimate security and protection for gates around swimming pools, homes, childcare centers, schools and wherever safety is critical MIAMI--(BUSINESS WIRE)--Following the success of ...

With a visually appealing and functional design, SDC door prop alarms are compatible with all access control systems but can also function as a stand-alone solution. Now you can condition access ...