The module is mounted via a bracket, it is tamper protected and has a back-up battery.
Three Inputs for the connection of:
Analogue sensors with voltage 0~12V
Digital sensors with voltage 0~12V
Potential-free outputs NC/NO
Open Collector Outputs OC

Three Outputs for connecting actuators with a maximum of 24VDC
SPDT (Single Pole, Double Throw) relay (toggle switch)
functions:
Configurable timer that automatically switches off after a preset period of time (default is 500 ms)
The output can be set to activate automatically when the input terminals
(see configuration setting)