Wireless room temperature sensors have been designed for reliable operation in wide range of environments using the latest RF technology. Lithium battery powered (24V power available on request). 868.30Mhz. Accurate temperature measurement. The measurement is transmitted on change of measurement or minimum once in 60 minutes. Up to 99 wireless sensors can be connected to a single FLTA network. Range up to 500m (line of sight), 20..100m (in buildings). The range can be extended with repeaters. 86W x 86H x 32D mm. Large range of options include digital contact, setpoint, display and 5-position switch.