Resideo - Honeywell Home YTHX9421R5085WW Thermostat Kit

Resideo - Honeywell Home YTHX9421R5085WW Thermostat Kit delivers precise climate control for homes. This 2-wire thermostat kit supports 7-day programmable or non-programmable operation, offering flexible comfort that fits your schedule. Compatible with both heat pump and conventional systems, it provides Auto/Manual Changeover to switch modes as needed.

Designed for simple installation and reliable performance, this white thermostat kit helps trim energy use by aligning heating and cooling with your schedule. The dual compatibility with heat pumps and conventional systems means one flexible device can handle multiple setups, while Auto/Manual Changeover makes seasonal adjustments effortless.

Key specs and capabilities include:

• 2-wire compatibility for easy wiring
• 7‑day programmable or non‑programmable operation
• Heat pump support with 4‑Heat/2‑Cool configuration
• Conventional system support with 3‑Heat/2‑Cool configuration
• Auto/Manual Changeover for flexible control
• Voltage rating 18–30 VAC at 50/60 Hz
• Temperature range 40–90°F (Heat) and 50–99°F (Cool) with overall 32–120°F operating range
• Humidity control 5–90% RH (non-condensing); dehumidification setting 40–80% RH