Multifunction sensor for measuring ambient temperature and humidity. Equipped with 4 optoisolated digital inputs and 4 outputs with separate common. The inputs can be used for status checking and / or counting, the outputs are 27Vdc 27mA transistor type according to DIN 43864 and can function as a remotely controlled output unit. The input and output circuits require an external power supply (eg 12Vdc or 24Vdc). BUS port for the connection of Sensor Bus environmental sensors (various combinations of sensors up to 8 measurements). It can be connected via the RS485 port to an Electrex network. 12Vdc power supply which can be supplied through the switching power supply cod. PFTP100-P2 (not included). Gray box size: 125x40x85 mm.