New & Boxed - ESI Wireless Programmable Room Thermostat ESRTP4RFW ESRTP4RFW is one of the easiest to install, most reliable and value for money domestic heating and hot water controls available helping you and your customers reduce energy use and lower costs. With the ability to control combi boilers, system or heat only boilers via an S or Y Plan the ESRTP4RF meets boiler plus requirements and can be wall or stand mounted. 7 day, 5/2 or 24 hour operation offering full flexibility over your heating control Automatic summer/winter time change Easy to use, wall or stand mountable 3-year warranty for complete peace of mind Delayed Start & TPI Technology for maximum energy savings
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