ESI 4 Series RF
Product code: ESRTP4RF+
About this product
Take complete control of your home heating with the ESi ESRTP4RF+ Wireless Programmable Room Thermostat. Engineered for maximum comfort, ultimate energy efficiency, and total convenience, this battery-powered digital thermostat is the perfect upgrade for any modern central heating system.
By separating the thermostat from the receiver, ESi lets you monitor and control your room temperature exactly where you spend your time—no messy wiring or wall-chasing required.
Key Selling Features
- True Wireless Freedom: The thermostat unit is entirely battery-powered and communicates via a pre-paired 868MHz radio frequency (RF) to the mains-powered receiver. Put it on a desktop stand or mount it to any wall.
- Flexible Scheduling Options: Choose between 7-day, 5/2-day (weekdays vs. weekends), or 24-hour programming to fit your exact lifestyle. Set up to 6 time and temperature changes per day.
- Smart Energy Savings: Built-in TPI (Time Proportional and Integral) logic, Optimum Start/Stop, and Delayed Start learn how your home heats up, ensuring your boiler works less to save money on energy bills.
- Easy-to-Read Backlit Display: Features a large LCD screen with a bright blue backlight, making it effortless to read and program, even in dim hallways.
- Landlord & Safety Features: Comes equipped with a secure Landlord Service Interval Reminder, a 5°C Frost Protection mode to safeguard your pipes in winter, and a Holiday Mode.
- Automatic Time Adjustment: Never worry about daylight savings again; the internal clock automatically shifts 1 hour forward or backward during BST/GMT changes.
What’s in the Box?
- 1 x ESi ESRTP4RF+ Wireless Thermostat Unit
- 1 x Pre-paired Wireless Receiver Unit
- 2 x AA Batteries
- 1 x Wall Mounting Plate & Fixtures
- 1 x User / Installation Manual
Technical Specifications
- Power Supply: 2 x AA Alkaline Batteries (Thermostat) / 230V AC (Receiver)
- Frequency: 868MHz (Two-way wireless connection)
- Temperature Range: 5°C to 30°C
- ErP Class: Class IV (2% contribution to system efficiency)
- Dimensions: 120mm x 90mm x 28mm (Thermostat unit)
Need a hand choosing?
Our experienced team are happy to help with sizing, compatibility and alternatives.
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