Electronic thermostat ETN4 1999

ETN4-1999 is an “all-in-one” thermostat with very large adjustment and application possibilities with ON/OFF or PWM/PI control mode, and it can also work as an ordinary power regulator without a temperature sensor.

It allows temperature regulation in the range from -19.5 °C to +70 °C, with adjustable hysteresis from 0.3 °C to 10 °C. It has a two-pole switch, a large backlit display and three navigation buttons, and one or two external temperature sensors can be connected to it. It is adapted for installation on a standard DIN 35 rail and comes with a single floor NTC sensor.

In addition to maintaining the set temperature, there is also the so-called “night setback” or “night delay”, which is the possibility of automatic temperature reduction in the period set by an external time programmer (night, weekend). An alternative to this function is an adjustable frost protection temperature.