The Elta 018-CH100‑0.9 – 1TP is a compact circular electric heater designed for 100mm duct installations, delivering 0.9 kW power on a single-phase supply. Constructed with a durable Aluzinc coated steel casing, this heater includes two built-in protection thermostats to ensure safe operation. It offers convenient screw terminals for easy electrical connection and a potentiometer to adjust the temperature settings precisely. Additional safety and control features include a differential pressure switch to detect adequate airflow, a sensor for minimum air velocity detection, and a supply air temperature sensor to monitor and regulate heating performance effectively.