The controller with a large, backlit display - it is designed both to control electric heating systems and to protect pipes against freezing, protect the foundation in and even to control refrigeration. It can cooperate with two different sensors, where the second one acts as a limiting sensor, i.e. protecting or enforcing an appropriate temperature level. Regulator with adjustable hysteresis, installed in the switchgear.

Technical data

• supply voltage 230 V, 50-60 Hz
• maximum load 16 A, 230 V, 50-60 Hz
• DIN rail mounting
• built-in 16 A 1-pole circuit breaker
• ON / OFF or PWM / PI control method
• temperature regulation range from -19.5 C to +70 C
• lowering or increasing the temperature with a connected sensor from -19.5 C to +30 C; without connected sensor 0-100%
• frost protection with connected 0-10 C sensor without connected 0-100% sensor
• adjustable hysteresis 0.3-10 K
• degree of protection IP20
• frost protection and temperature increase or decrease with a voltage signal of 230 V / ~ 50/60 Hz
• working temperature from -20 C to +55 C
• dimensions (height x width x depth) 86 x 52.5 x 58 mm
• number of module in 3
• GOST-R, VDE product certificates
• product marked with CE

The package includes the ETN4 1999 controller and the ETF-144 / 99T temperature sensor.