The Omega Engineering OMWT-TEMPRH wireless temperature and relative humidity transmitter is a battery operated digital temperature and relative humidity sensor with a micro-processor controlled 418 MHz FCC certified radio transmitter.
It has an on board time of day clock that allows it to spend most of the time in a low power quiescent state. At predetermined time intervals the clock will wake up the onboard microprocessor. Unique serial number information digital temperature and relative humidity data are read from a semiconductor digital temperature sensor and a relative humidity sensor. http://www.omega.ca
