T501ML4 PRO1 T500 Line-Voltage Heat-Only Thermostat
T501ML4 PRO1 T500 Line-Voltage Heat-Only Thermostat
Replace a compatible line-voltage thermostat used for direct electric heat control. Confirm the complete equipment model, system type, heating and cooling stages, power or voltage, terminal labels, auxiliary/emergency heat requirements, and wiring before ordering. A similar-looking thermostat is not proof of compatibility; some systems require a common wire, adapter, or approved control.
Technical Specifications
| Specification | Details |
|---|---|
| SKU / part number | T501ML4 |
| Product type | Line-voltage mechanical thermostat |
| Brand | PRO1 T500 |
| Voltage | Line voltage; 4-wire |
| Application | Electric heat-only systems |
| Catalog description | Non-programmable, 4-wire line-voltage thermostat for heat-only control. |
Installation and safety: Turn off power at the HVAC disconnect or breaker before removing the existing thermostat. Label each wire, follow the equipment and thermostat instructions, and use a qualified HVAC technician when system voltage or wiring is uncertain.
How to find your model number: Read the thermostat model number on the front, behind the faceplate, or inside the sub-base. Also photograph the terminal wiring and locate the furnace, air-handler, or heat-pump model label. Verify the complete equipment and thermostat details before ordering.
Brand
PRO1