Wireless Programmable Thermostat will replace the following Honeywell CM Series products: CM921, CMS921, CMS921B1042 CM927, CMS927, CMS927B1049 CM727, CMS727, CMS727E1016 CM721, CMS721. Wireless Convenience – Pre-paired thermostat and receiver with up to 30 m range; no binding needed for a straightforward install.
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