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Richard from The Smart Thermostat Shop.co.uk show us how to pair a Honeywell Home DT4R to a Honeywell BDR91 Wireless Relay Box.
If you have an existing thermostat such as a Honeywell DTS92E or T87RF, the DT4R can pair to an existing BDR91 Wireless Relay Box instead.
We sell the Honeywell Home DT4R here - thesmartthermo...
We sell replacement Honeywell BDR91 Wireless Relay Boxes here - thesmartthermo...