The burglar alarm circuit design was based on the operation of CMOS 4001 where a high output would only result if both the inputs to the gate are low. Burglar Alarm – one way of preventing break in’s ...

This circuit generates a warning alarm when someone tries to lift your luggage while you are traveling in bus or train so that we may get alerted. During our journey through train and bus, we carry ...

Any time you are working with burglar alarm, access control, sound, nurse call, or intercom systems, as well as computer networks, lighting dimmer controls, and low-voltage industrial controls, you ...

Normally, the fire alarm initiating device, notification appliance and signaling line circuits are not run outside the building. When we have no choice but to run them overhead or underground, ...

While there are a lot of similarities between fire alarms and security systems, it is crucial to be aware of the differences, and wiring is one of the biggest. Like security panels, fire alarm control ...

A DEVICE, invented in France, which can be used either as a fire alarm which will give automatically a telephone message to the fire brigade, or as a burglar alarm which will summon the police, is ...