Honeywell Home TH109PROPLUS Digital Line Volt Thermostat for Electric Heating, 240VAC, SPST, Non-Programmable

Optimize electric heating control with the Honeywell Home TH109PROPLUS digital line volt thermostat — engineered for reliable, low-maintenance performance in commercial and residential installations. This thermostat uses TRIAC switching for near-silent operation, protecting sound-sensitive environments and minimizing electrical interference around security and surveillance equipment. Its battery-free design removes the need for periodic battery changes, while the on-screen heating power indicator gives technicians an immediate view of load status to speed up monitoring and diagnostics. Rated for 240VAC line-voltage and configured as SPST (single-pole, single-throw), the TH109PROPLUS is ideal for electric baseboard, convection, and in-wall heating systems where straightforward, manual control is preferred. As a non-programmable thermostat, it delivers simple usability for facilities managers who want dependable temperature control without scheduling complexity. Use this Honeywell Home thermostat to improve HVAC reliability, support temperature-sensitive networking and surveillance gear, and reduce maintenance rounds. Order the TH109PROPLUS for quick installation in apartments, offices, and equipment rooms where consistent, quiet heating control matters.

• Silent TRIAC switching reduces audible clicks and interference for quiet operation in offices and equipment rooms
• Clear on-screen heating power indicator provides instant load status for faster troubleshooting and maintenance
• Battery-free design eliminates routine battery replacement and lowers lifetime maintenance costs
• 240VAC line-voltage support delivers reliable control for electric baseboard and convector heating systems
• Simple non-programmable SPST control offers intuitive, dependable manual temperature regulation for commercial and residential sites