Honeywell Home BDR91A1000 evohome Wireless Relay Box, White : Amazon.co.uk: DIY & Tools
Adept/Honeywell 7 Days Programmable Wireless Room Thermostat with Relay Box - Energy Saving Replacement of CM927 CMS927 CMS927B1049 Series Smart Thermostat - White : Amazon.co.uk: DIY & Tools