This sensitive and reliable door sensor can be powered from a 9V alkaline battery pack. At the heart of the circuit is one Unipolar Hall effect sensor MH183 (HS1). It incorporates advanced chopper ...

The sensor part is essentially a reed switch encased in a plastic shell. Normally the reed switch is in open state but when the magnet part comes close to the sensor part, the reed switch closes ...

Imperceptible magnetic sensor matrix system integrated with organic driver and amplifier circuits. Science Advances, 2020; 6 (4): eaay6094 DOI: 10.1126/sciadv.aay6094 ...

For one, the Nest Guard acts as the central hub, so all the disarming and arming of the security system is done through that device, which contains a motion sensor, connects to your home network ...