This wireless programmable room thermostat, designed and made by Resideo under the TotalHome brand, serves as a direct replacement for several Honeywell models including CM727, CMS727, CMT727, CM921, CMS921, CM927, and CMS927. The receiver can be paired with Honeywell BDR91 relay boxes. It features 7-day programming with the ability to copy days for simplified scheduling, optimum stop/start functionality, and is Boiler Plus compliant, meeting Part L building regulations for new boiler installations. This thermostat increases heating efficiency, saving energy and money on bills. Programming is intuitive, with individual day programming and easy day copying. The package includes the wireless programmable thermostat, a relay box, a table stand, AA batteries, and instructions. Mounting is via wall mount, and it features button control.