| Power Source | Battery |
|---|---|
| Items Included | Mounting Hardware |
| MPN | RTH221B1039 |
| Compatible Product | Universal |
| Battery Size | AAA |
| Smart Home Compatibility | Universal |
| Control Style | Digital, Push Button |
| Voltage | 24 V |
| Features | Digital Display |
| Protection Properties | Low Voltage Protection |
| Thermostat Programmable Days | 7 |
| Compatible Brand | Honeywell, Universal |
| Color | White |
| Compatible Model | Honeywell |
| Material | Plastic |
| Thermostat Shape | Rectangular |
| Mounting | Wall-Mounted |
| Brand | Honeywell |
| Sensor Technology | Temperature |
| Voltage Type | Low Voltage |
| System Switching | Heat-Cool-Off |
| Model | RTH221B1039 |
| Cool Stages | 1 |
| Smart Home Protocol | Clear Connect |
| Country of Origin | Mexico |
| Programmability | Programmable |
Check the listing for details. Honeywell Home Programmable Thermostat RTH221B Series. Color: White, Condition: Open box, Made in Mexico. Listed at 11.69 USD. Honeywell Home RTH221B programmable thermostat with 1-program daily schedule. Simple, easy-to-use design for heating and cooling systems. Comes in original box (box shows wear). Great budget replacement thermostat.