EPH CP4D OpenTherm Programmable RF Room Thermostat with Dial Control

The EPH CP4D is an OpenTherm programmable RF room thermostat featuring intuitive handwheel dial control for quick and smooth temperature adjustment. It retains the trusted features of the original CP4 including OpenTherm modulation, wireless communication and wide compatibility while adding a large clear display.

Suited to domestic heating systems and professional installers, the CP4D delivers modern control with 5-year warranty, frost protection and full Boiler Plus compliance.

Key Features

• OpenTherm modulation for efficient boiler operation
• Wireless RF communication at 868 MHz
• Intuitive handwheel dial control
• Large clear display
• Boiler Plus compliant
• Frost protection
• 5 year warranty
• CE UK CA marked
• Works with the EPH EMBER Smart Thermostat System (TS)

Benefits

• Quick and smooth temperature adjustment via dial
• Energy efficient OpenTherm modulation
• Reliable wireless connection to receiver
• Simple setup and operation
• Protects against frost damage
• Long-term reliability with 5 year warranty

Technical Specifications

• Product code: CP4D
• Products included: RFRPD & RF1B
• Contact rating (RFRB): 230Vac, 50 Hz, 3A
• Switch output (RFRB): SPDT Volt Free
• Frequency: 868 MHz
• Power supply (RFRPD): 2 x AA Alkaline Batteries
• Temperature range: 5…35°C
• Temperature sensor: NTC100K
• Switching differential: 0.4°C

What’s in the Box?

1 x EPH CP4D (RFRPD) programmable RF thermostat and 1 x RF1B receiver.