The peculiar characteristic of this module is the possibility of using devices with only two wires with resistive terminator (standard 8.2Kohm). However, also having an internal terminator it can be connected to traditional 4-wire safety devices.
The module is based on the use of safety relays with guided contacts and can be configured both with automatic reset and manual reset. Furthermore, it has an auxiliary signaling output with relay, making both the NA contact and the NC contact available. This output can be configured both in “instant” or “delayed” mode.