Siemens QAA2291.EWSC Room Temperature Sensor, Wireless - P2P, No HMI, Siemens Logo

Siemens QAA2291.EWSC Room Temperature Sensor, Wireless - P2P, No HMI, Siemens Logo. Siemens Wireless Room Sensors (WRS) eliminate the need to run wire between Terminal Equipment Controller (TEC) and associated room temp sensors.