The BMT-DI4 BACnet MS/TP is suitable for detecting potential-free switch states, for example electrical limit switches on vent valves or auxiliary contacts of power contactors. The inputs can be operated by means of potential-free switches or contacts or used as voltage inputs. BACnet MS/TP, RS485 (two-wire bus), Supply voltage 20 V to 28 V AC/DC

Tecnical Features 

• Protocol BACnet MS/TP
• Addressing range 00 to F9
• Bus interface RS485 (two-wire bus)
• Transmission rate 9600 to 115200 bit/s
• Operating voltage 24 V AC/DC +/- 10 % (SELV)
• Current consumption 50 mA (AC) / 20 mA (DC)
• Relative duty cycle 100 %
• Inputs 4 x digital
• Input / voltage 30 V AC/DC
• Input / high signal more than 7 V AC/DC
• Display Green, red and yellow LED
• Dimensions (W x H x D) 35 x 69.3 x 60 mm
• Weight 95 g
• Operating temperature range -5 °C to 55 °C
• Storage temperature range -20 °C to 70 °C
• Ingress protection for housing / terminal blocks IP40 / IP20