The motion sensors uses infrared to detect movement in a 170° field with a range of 7 meters. I use these to detect motion in the kitchen, bathroom, bedroom corridor and trigger relevant automations.. mostly turning on lights. E.g. after the alarm clock goes off in the morning there's a 15min window in which the corridor sensor will turn on lights in the bathroom and kitchen areas.These sensors communicate over the Zigbee protocol. Zigbee uses a 2.4GHz band that's similar to Wifi. It's main advantage is however that it forms a mesh network. So a tiny sensor running on a button cell doesn't have to connect at a central hub but rather uses the nearest mains powered device to repeat its signal. Since most of the devices are also controlled over Zigbee I in any project have a fairly extensive Zigbee mesh and these sensors never need to broadcast very far. In general the button cell of most of the sensors seems to last between 1-2years before needing to be replaced. About the Company Legal Status of Firm: Partnership Number of Employees: Upto 10 People Annual Turnover: 40 L - 1.5 Cr company-description: Established as a Partnership firm in the year 2016 at Ahmedabad (Gujarat, India), We "Vedanta Infratech" are a leading Smart Home System Integrator and Service Provider of a wide range of Smart Home Solutions | Various Type Digital Door Locks | Motion Sensors | Wardrobe / Cabinet Sensors | Curtain / Blinds Automation etc.