Unit Relay for auxiliary services (control lights, openings, ringtones, etc.). Made of plastic case for installation in control cabinets (EN50022), size 4 DIN modules below. IP30 protection. The unit has 2 relay with a changeover contact with breaking 22 A resistive (1A inductive) voltage max 250V AC (excitation coil power supply 10 / 14V AC or 14 / 18V DC - 50 mA). The two relays are associated by default to control door opener and AUX2. It is also equipped with 6 switches for programming the control, 1 potentiometer for adjusting the activation time of relay 1 (door opener) and one LED for indicating the state of receiving data from the bus line.