Siemens QAA1031.AATU, Button Temperature Sensor with Wallplate, 10K Ohm NTC, Stainless Steel

Siemens QAA1031.AATU, Button Temperature Sensor with Wallplate, 10K Ohm NTC, Stainless Steel. Siemens Wireless Room Sensors (WRS) eliminate the need to run wire between Terminal Equipment Controller (TEC) and associated room temp sensors.