{"product_id":"resideo-th109proplus-line-volt-thermostat-240v-spst","title":"Resideo th109proplus Line Volt Thermostat 240V Spst","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe RESIDEO th109proplus is a digital, non-programmable line voltage thermostat designed for electric heating applications. It uses TRIAC switching technology to deliver accurate, silent temperature control without the audible click of a mechanical relay. Rated for 240 volts and up to 12.5 amps (3000 watts), it handles the full load of most residential electric baseboard and radiant heating systems. The push-button interface and backlit display make it straightforward to set and read temperatures, even in low-light conditions. Licensed electricians install this unit as a direct hardwired replacement or new-installation thermostat for line-voltage electric heat systems.\u003c\/p\u003e\u003cp\u003eThe th109proplus is suited for residential and light commercial electric heating applications where a simple, reliable non-programmable thermostat is preferred. It controls electric baseboard heaters, radiant ceiling panels, and similar 240-volt line-voltage heating loads. The two-wire SPST wiring configuration keeps installation straightforward in single-stage heating systems. Temperature control spans 41 degrees F to 86 degrees F, covering the full range of typical occupied and setback heating scenarios.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eTRIAC switching provides silent operation with no mechanical relay noise\u003c\/li\u003e\n\u003cli\u003e240-volt, 12.5-amp rating supports loads up to 3000 watts\u003c\/li\u003e\n\u003cli\u003eBacklit digital display for easy reading in low-light environments\u003c\/li\u003e\n\u003cli\u003ePush-button interface for simple, intuitive temperature adjustment\u003c\/li\u003e\n\u003cli\u003eTwo-wire SPST wiring with 6-inch tinned copper lead wires for clean terminations\u003c\/li\u003e\n\u003cli\u003eVertical mount orientation, hardwired installation, white finish\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style line-voltage thermostat for 240-volt single-stage electric heating systems using a two-wire SPST configuration.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation must be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and all applicable local codes. Shut off the branch circuit breaker and verify the circuit is de-energized with a voltage tester before making any wire connections. The unit is hardwired using its 6-inch tinned copper lead wires and mounts vertically on a standard electrical box. Do not exceed the rated load of 12.5 amps or 3000 watts on the switched circuit.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Electric Heat (Line Voltage)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage\u003c\/strong\u003e: 240 volts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmperage\u003c\/strong\u003e: 12.5 amps\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWattage\u003c\/strong\u003e: 3000 watts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency\u003c\/strong\u003e: 50\/60 Hz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSwitch Type\u003c\/strong\u003e: SPST\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring\u003c\/strong\u003e: 2-wire\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range\u003c\/strong\u003e: 41 degrees F to 86 degrees F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Method\u003c\/strong\u003e: Hardwired\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectric Connection\u003c\/strong\u003e: 6-inch Tinned Copper Lead Wires\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUser Interface\u003c\/strong\u003e: Push Button with Backlit Display\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount\u003c\/strong\u003e: Vertical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight\u003c\/strong\u003e: 4.8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 4.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepth\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor\u003c\/strong\u003e: White\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: RESIDEO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: th109proplus\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"RESIDEO","offers":[{"title":"Default Title","offer_id":51619909730610,"sku":"TH109PROPLUS","price":76.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5e2b891f665f74ed9e827ba20f31d3ac.jpg?v=1787337043","url":"https:\/\/voomisupply.com\/products\/resideo-th109proplus-line-volt-thermostat-240v-spst","provider":"Voomi Supply","version":"1.0","type":"link"}