The ST-427i Controller by TECH Sterowniki (Product Code: WG.14.0131) is an advanced device designed for the efficient management of up to three pumps. This controller activates the pumps when the temperature exceeds a predefined threshold and deactivates them when the boiler cools down, ensuring optimal performance and energy efficiency. With a power supply of 230 V, 50 Hz and a maximum power consumption of just 4W, the ST-427i is both economical and effective in maintaining desired temperature levels.

This model features a wide temperature adjustment range for both floor heating (30 to 75 °C) and central heating systems (30 to 75 °C), along with a precise measurement accuracy of 1°C. The controller also includes a LCD display, three temperature sensors, and a user-friendly rotary knob for easy operation. Notably, the ST-427i incorporates advanced functions such as anti-stop and anti-freeze features, allowing for customizable pump prioritization and the option to connect a room thermostat, making it a versatile choice for modern heating systems.

Constructed with high-quality materials that withstand extreme temperatures, the ST-427i ensures durability and reliability in various environmental conditions, with an operational temperature range of +5 to +50 °C. The controller's robust design and functionality make it a superior option for those seeking a dependable solution for pump management in heating installations.