ABB Connection unit Model No :- DSTD 150A Part No :- 57160001-UH/1 Number of Channels :- 32(2*16) Rated Voltage :- 24Vdc Input voltage range, "1":- 15-35V Input voltage range, "0" :- -25 - +5V Impedance :- 4k??? Event detection :- no Current consumtion +5v :- typ. 460mA Power dissipation :- 5.5w Isolation test voltage, 50 Hz for 1 Minute :- 500V