Merten Room Temperature Controller Module, Arctic White MEG5779-0325

Control heating and cooling with this flush-mounted room temperature controller module from Merten. It switches up to 10 A resistive load at 230 V AC and offers a temperature setting range from +5 °C to +30 °C with ±0.5 K accuracy.

Overview

The Merten MEG5779-0325 is an electronic room temperature controller module in Arctic White. It is designed for flush mounting in standard wall boxes and works with Merten System M and System Design frames. The module uses an internal temperature sensor and provides a potential-free NO relay output for controlling heating or cooling systems.

What stands out

• Two-point (ON/OFF) control with frost protection function
• Switching capacity: 10 A resistive, 2 A inductive (cos φ = 0.6)
• Low standby power consumption under 0.5 W
• Simple screw terminal connection for rigid or flexible conductors

Technical details

• Operating voltage: 230 V AC, 50/60 Hz
• Temperature setting range: +5 °C to +30 °C
• Control accuracy: ±0.5 K at 25 °C
• Internal temperature sensor
• Output: 1 NO contact (relay)
• Mounting: Flush-mounted
• Colour: Arctic White
• Protection class: IP20
• Connection: Screw terminals, max 2 x 2.5 mm² rigid or 2 x 1.5 mm² flexible
• Operating temperature: -5 °C to +45 °C
• Standby power consumption: < 0.5 W

Our verdict

A reliable and precise room temperature controller module for standard flush-mount installations, offering robust switching and easy integration with Merten switch ranges.