Read online Honeywell RTH221B1000 Thermostat User Manual pdf with better navigation. Printable and downloadable, Honeywell RTH221B1000 Thermostat user guide pdf Brand:Honeywell Product:Thermostats Model:RTH221B1000 Page: 4 Page(s) Note: For opening this Honeywell RTH221B1000 User Manual, your computer need Adobe Reader. You can get the Adobe Reader for free by going here https://get.adobe.com/reader/