Siemens Building Technology 540-680FA Sensor 320735-701 this pre-wired power relay simplifies

this pre-wired power relay simplifies installations by eliminating the need for separate electrical boxes

Built with a rugged brass body and Buna-N diaphragm

The balanced port construction compensates for changes in head pressure

Always inspect for blockages in the barbs and hoses before replacing the component

depending on the ambient humidity levels and the duty cycle of the compressor system

Siemens Building Technology 540-680FA Sensor 320735-701 this pre-wired power relay simplifiesThe Siemens Building Technology 540 680FA is a Series 1000 wall mounted room temperature sensor designed for seamless integration with Terminal Equipment Controllers (TEC) and LONMARK compliant systems. This desert beige unit features a high precision 10K Ohm Type II NTC thermistor, ensuring accurate thermal feedback within a standard operating range of 55F to 95F. Engineered for professional grade HVAC automation, the 540 680FA includes a secondary