Powercast Corporation has unveiled its Lifetime Power Wireless Sensor System for wireless environmental monitoring in HVAC control and building automation systems, which uses RF energy broadcast by remote units to power wireless sensor nodes without batteries or wires.
The Powercast system consists of three parts: a family of batteryless sensor nodes with embedded Powerharvester receivers for wireless power, a WSG-101 building automation system (BAS) gateway, and a TX91501 Powercaster transmitter. The first member of the family of sensor devices is the WSN-1001 wireless temperature and humidity sensor. Additional sensors for measuring measure CO2, pressure, light level, motion and other conditions will follow shortly. [via]
Batteryless RF-powered wireless sensor system targets building automation – [Link]