ESi Controls Wireless RF Programmable Room Thermostat ESRTP4RFW

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The ESi ESRTP4RFW is a wireless programmable room thermostat that's easy to install and user-friendly. It features OpenTherm technology, which automatically adjusts your boiler’s f low temperature to help reduce gas usage by up to 15%, cutting energy bills. For smart functionality, simply add the ESWIFIHUB (sold separately). * See Technical Attachments for more details. Show more