Programmable 7-day thermostat CM507 CMT507A1007/U

Programmable Thermostat with 7-Day Cycle and Precise Control

The CM507 thermostat enables precise temperature control in a home or small building, adapting heating to the daily routine. It functions as an external controller for gas boilers, oil boilers, circulation pumps, and zone valves — without the need to replace the existing system.

It features a large LCD display showing the current room temperature, the selected profile (comfort/economy), and the time. Programming is done via a graphical "timeline" — easy to understand even for users unfamiliar with automation. You can set up to 24 changes per day across two temperature levels: comfort and reduced (economy). Each change can be scheduled hourly.

If you suddenly need a higher temperature, simply adjust it manually. The setting remains active until the next scheduled cycle, after which the system returns to the programmed schedule. No reset is required.

For the Installer — Flexibility and Compatibility

The controller features a potential-free SPST contact compatible with devices operating at 24–230 V. The load capacity is 5 A for resistive loads and 0.95 A for inductive loads — sufficient for most boilers and pumps in single-family homes. You can configure the number of cycles per hour: from 2 to 6 (factory default: 4). This allows the thermostat to be adapted to the system's characteristics — e.g., 3 cycles/h for an oil boiler, 6 for a gas boiler with zone valves.

In installer mode, pump protection can be enabled — every 24 hours, the controller briefly activates circulation for 15 seconds to prevent pump seizure. The time format can also be changed to 12- or 24-hour.

Power Supply and Reliability

It operates on two AA batteries (alkaline), lasting at least 2 years — and up to 3 years when using Duracell MN1500 batteries. When the batteries are low, a warning appears on the display. Program data is stored in EEPROM memory — settings are retained even during battery replacement.

The thermostat complies with the EN60730-1:1999 standard. Dimensions are 127 × 75 × 27 mm, and it is wall-mounted — wires are connected from the rear of the base, without needing to remove the entire unit. Wire cross-section up to 2.5 mm² is supported.

The NTC sensor (10K @25°C) measures temperatures in the range of 0°C to 50°C, with a control accuracy of ±0.5 K under standard conditions. The temperature setting range is from 5°C to 28°C, allowing precise adaptation of comfort to user needs.