The electronic timer is equipped with a relay output and it is suitable to adjust the run-on operation time of a ventilation unit. Provided with a front knob to adjust the overrun time (from 30 seconds to 25 minutes) and with an ON/OFF button. Yellow front led to indicate that the overrun time is active. IP40 protection degree. 230V~ 50-60 Hz. Max. load 2A. Ambient temperature: from -5°C to +35°C. Max. Relative Humidity: 90% at 35°C. Available for surface or recessed mounting.