ESi ESRTD2 Digital Room Thermostat with TPI

The ESi ESRTD2 is a battery-powered electronic digital room thermostat with TPI (Time Proportional Integral) control, designed for accurate room temperature regulation in UK homes. It suits trade installers and DIY users replacing older mechanical thermostats on new or existing heating systems.

Built with electronic internals for superior accuracy over traditional units, it delivers potential energy savings of up to 10% while maintaining comfort. The stylish design includes an easy-fit industry-standard backplate for quick installation without additional wiring.

Key Features

• TPI technology for chronoproportional control and energy savings
• Large clear adjustable dial with LCD display
• Flame indicator showing when the boiler is calling for heat
• Easy-fit backplate for simple replacement of older thermostats
• Double insulated and surface mounted
• 3-year warranty
• Volt-free SPDT contacts
• DIP switch selectable TPI cycles and °C/°F

Benefits

• ✔ Reduces temperature swing for greater comfort and efficiency
• ✔ Saves money on heating bills with TPI control
• ✔ Quick 2-wire installation with industry-standard backplate
• ✔ Clear digital display of room and set temperature
• ✔ Simple user controls suitable for all households
• ✔ Improves boiler efficiency and ErP rating
• ✔ Reliable UK-designed product with full warranty support

Technical Specifications

• MPN: ESRTD2
• Power Supply: 2 x AA 1.5V alkaline batteries (LR6, MN1500 type)
• Temperature Range: 5°C to 30°C
• Accuracy: +/- 0.6°C
• Switch Rating: 3(1)A 230V AC
• Switch Type: Volt-free SPDT
• Dimensions: 85mm x 85mm x 35mm
• Fixing: Easy-fit backplate
• Complies with: EN60730-1, EN60730-2.7, EMC and LVD directives

What’s in the Box?

1 x ESi ESRTD2 Digital Room Thermostat with TPI, backplate, batteries and installation instructions.