Touch the sensor of the alarm with your finger and it starts beeping, goes on for some time and then stops. Touching it again, and it goes again! This little and flexible circuit consists of a touch ...

Learn how to make a simple door alarm to enhance your home security with our step-by-step guide. This DIY theft alert alarm ...

This simple alarm timer circuit is made with 4060 which has an integrated oscillator with a good stability with a relatively wide frequency range. In the circuit diagram the oscillator frequency is ...

If you’re looking for something to do this weekend, consider this PIR (passive infrared) Sensor Alarm project. Not only will the motion-sensing alarm protect your gear from animals and zombies alike, ...

A few simple components are all it takes to create an over-temperature alarm. The circuit in Figure 1 requires only an ordinary negative-temperature-coefficient (NTC) thermistor, two common ICs, and a ...

Ring's $199 Z-Wave-enabled Alarm Security Kit is so simple you might overlook it at first. The system includes a base station, a keypad, a door/window sensor, a motion sensor and a Z-Wave range ...

SleepControl for iOS is the fastest alarm clock in the AppStore, allowing you to set an alarm in literally 3 (!) seconds. It comes together with dedicated battery management features, which were ...

Learn how to make a simple fire alarm with our step-by-step guide in this video! Discover the essential components and straightforward process needed to build an effective fire detection system from ...