Add to Cart Siemens 540-538 Siemens MSRP: Now: $39.34 Was: Metal guard for plasatic flush mount sensors. Includes two mounting screws. 540-538
Add to Cart Siemens 540-995 Siemens MSRP: Now: $51.11 Was: Flush-mount room sensor for Terminal Equipment Controllers (TECs). 540-995
Add to Cart Siemens 540-680FA Siemens MSRP: Now: $645.44 Was: TEC RM SNSR-W/STPT,IND,OVRD,BG 540-680FA
Add to Cart Siemens 540-520A Siemens MSRP: Now: $121.78 Was: The Flush Mount Room Temperature Sensor is a 10K ohm self-contained, non-intrusive, and tamper-resistant unit. The sensor connects to the RJ-11 port of the controller via a pre-terminated cable. This... 540-520A