THEBEN RAMSES 703 S Electronic Surface-Mounted Room Thermostat, White

In a residential living room or a small office, the THEBEN RAMSES 703 S quietly maintains the desired temperature without any manual dial. This surface-mounted electronic room thermostat replaces conventional mechanical units with a digital, programmable controller that adapts to weekly routines and reduces energy waste.

Key specifications

• Electronic room thermostat for surface mounting (AP)
• Digital control with 7-day weekly program
• Operating modes: Comfort, Economy, Automatic, Frost protection, Party, Holiday
• Temperature setting range: +6 °C to +30 °C
• LCD display with backlight
• Power supply: 2x AA 1.5 V batteries (battery life approx. 2 years)
• Switching contact: 1 potential-free NO contact, 6 A / 250 V AC
• Internal temperature sensor, accuracy ±0.5 K
• Protection class: IP20
• Colour: White (RAL 9010)
• Special functions: Optimum start, self-learning, pump protection, automatic summer/winter time changeover

Why choose it

The RAMSES 703 S combines precise electronic temperature sensing with a flexible weekly schedule, so rooms are warm when needed and setback when not. Its potential-free contact allows control of various heating or cooling loads, and the self-learning optimum start ensures comfort at the programmed time without wasting energy.

Ideal use cases

• Replacement for old mechanical thermostats in living rooms, bedrooms, or hallways
• Surface mounting on walls where flush-mounted boxes are not available
• Control of gas boilers, circulation pumps, or zone valves via potential-free contact
• Energy-saving scheduling in holiday homes or offices with regular occupancy patterns

Good to know

Battery operation means no wiring to mains for the thermostat itself, simplifying installation. The device includes automatic summer/winter time changeover and frost protection to prevent pipes from freezing during absence. With a battery life of about two years, maintenance is minimal.