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The IO HVAC CONTROLS iO-CS41WP is a flush-mounted, tamper-proof heating thermostat designed for low-temperature monitoring and control applications. It activates heating systems when ambient temperature drops to 41 degrees F, making it well suited for freeze protection in utility spaces, mechanical rooms, and storage areas. The unit mounts flush to the wall for a clean, low-profile installation and incorporates a tamper-proof design to prevent unauthorized adjustments. Licensed HVAC technicians and building automation professionals are the typical installers for this type of device.
This thermostat is intended for residential and light commercial heating applications where a fixed low-temperature setpoint is required. Typical use cases include freeze-stat duty in unoccupied buildings, pipe protection in unconditioned spaces, and supplemental heating control in mechanical or utility rooms. Its flush-mount form factor suits installations where a surface-mount enclosure is not practical or desired.
Designed as an OEM-style replacement or new-installation freeze-protection thermostat for residential and light commercial heating systems requiring a fixed low-temperature control point.
Installation should be performed by a licensed HVAC technician in accordance with applicable local codes and the equipment manufacturer instructions. Power down the heating system and disconnect control voltage before wiring the thermostat. Verify the control circuit voltage matches the thermostat rating prior to energizing. Do not expose the unit to moisture levels beyond its rated environment, and ensure the flush-mount cutout dimensions match the unit footprint before cutting into the wall surface.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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