ESi ESRTP4+ Wired Programmable Room Thermostat with OpenTherm Sensor managing temperature and flow automatically

managing temperature and flow automatically

ensuring fast recovery and energy savings

Ramses II & III RF protocol — backwards compatible with existing Honeywell Home RF products including BDR91A

What warranty does this rail carry

Can X700 be used with other cleaning chemicals

ESi ESRTP4+ Wired Programmable Room Thermostat with OpenTherm Sensor managing temperature and flow automaticallyThe ESi ESRTP4+ is a wired programmable room thermostat that combines time and temperature control in a single wall mounted unit, without a separate RF receiver to install. It provides the same core energy saving intelligence as the wider ESi programmable range, including Chronoproportional Control (TPI), Delayed Start, Optimum Start, and Optimum Stop, alongside an OpenTherm interface for compatible boilers. Wired directly into the heating circuit via