Ouellet OTH Electronic Proportional Pulsing Line Voltage Thermostat, White

Meta description: Ouellet OTH electronic proportional pulsing line-voltage thermostat in white. Supports convectors and fan-forced convectors with selectable 15-second or 10-minute cycle. 0.5°C resolution with high control precision. Multiple voltage models including 120/208/240V and 277/347V.

What is this product

This is an electronic proportional pulsing line-voltage thermostat used to control electric heating loads like baseboards, convectors, and fan-forced convectors. It regulates temperature by cycling power in short pulses to maintain steadier comfort and tighter temperature control compared to basic on/off thermostats.

TL;DR: Who is this for

- Electricians upgrading electric heat controls for better comfort and steadier temperature

- Property managers standardizing thermostats across apartments, condos, and multi-unit buildings

- Homeowners who want more stable room temperature and less noticeable temperature swings

Institutional Fit

- Good for multi-unit residential, offices, schools, and commercial spaces using line-voltage electric heat

- Useful for rooms where comfort stability matters, like bedrooms, nurseries, patient rooms, and reception areas

- Supports both convector and fan-forced convector control cycles for broader retrofit compatibility

Technical Specifications

Regulatory Compliance

- Confirm the exact model number matches your supply voltage before installation

- Confirm amperage load is within the thermostat rating for your heater circuit

- Install in accordance with applicable electrical code and local authority requirements

Durability and Lifecycle

- Proportional pulsing control can reduce temperature swings that stress heating equipment and improve comfort consistency

- Designed for line-voltage electric heat applications where reliability and stable control are important

Procurement notes

- Match voltage first: choose the 120/208/240V models for most baseboard circuits, or OTH5007 for 277/347V systems

- Check load: add up heater amperage on the circuit and confirm it stays under the thermostat maximum load rating

- Choose cycle type based on equipment: 15-second cycle for convectors, 10-minute cycle for fan-forced convectors

- If you are replacing an existing thermostat, confirm it is line-voltage, not low-voltage (24V)

FAQ

What does proportional pulsing mean?
Instead of simple on/off switching, the thermostat pulses power in controlled cycles to keep room temperature steadier and reduce temperature swings.

Is this for baseboard heaters?
Yes, if your baseboard circuit is line-voltage and the heater load stays within the thermostat rating.

Which model do I need for 240V?
Use OTH3000-A, OTH4000-A, OTH3000P-A, or OTH4000P-A models that support 120/208/240V. Confirm the exact model and load rating for your circuit.

Which model do I need for 347V?
Use OTH5007 for 277/347V systems.

How do I know if my heating load is too high?
Compare your circuit amperage to the thermostat maximum load rating. If unsure, send your heater wattage and voltage and we will help confirm compatibility.

Is this low-voltage (24V) like a furnace thermostat?
No. This is a line-voltage thermostat intended for electric heaters, not HVAC low-voltage systems.