•   2 Versions : AMBUS® Port 20 / AMBUS® Port 60
•   Operating voltage (Version 20) 10.8… 28 VDC 20 … 45 VDC – (Version 60) 10.8… 27 VAC 20 … 30 VAC
•   Max. power consumption (Version 20) 7 W – (Version 60) 16 W
•   M-Bus voltage (without load) (Version 20) 32 V – (Version 60) 38 V
•   Max. M-Bus standby current (Version 20) 30 mA (20 standard loads) – (Version 60) 90 mA (60 standard loads)
•   Internal resistance Bus approx. (Version 20) 100 Ω – (Version 60) approx. 20 Ω
•   Overcurrent threshold (Version 20) 60 mA – (Version 60) 140 mA
transmission rate RS-232 C 300 … 9600 / RS-485 – 300… 9600 baud / optical 2400 baud
•   Galvanic isolation with M-Bus – (Version 60) yes
•   Bit recovery – (Version 60) yes
•   Temperature range 0… 55 °C
•   Dimensions H x L x P 78 x 56 x 56 x 117mm
•   Protection type IP 40