Ther mostatwith LoT technology42011077-103 R1© 2006 Honeywell International Inc.DescriptionThe Honeywell CM921 is a ‘wireless’ programmable room thermostat designed to control you heating system efficiently, providing comfortable temperatures when you are at home and energy savings when you are away. With ‘wireless’ communication there is no need to provide a wired connection between the thermostat and … Continue reading Honeywell Thermostat CM921 User Manual