ADAM-3651 is a 8-ch digital input expansion module for ADAM-3600-C2G intelligent RTU.
Supports Sink (Wet Contact) / Counter input type Rated Input : >5mA @ 12 VDC Input Filter : Programmable, Default 3ms Current : >10mA @ 24 VDC Pulse Input Frequency : 150Hz Over Voltage Protection : +40 VDC -40 ~ 70°C operating temperature
Datasheet