The device is dedicated to interface dry contacts with 2 input channels, such as sensors, conventional push buttons and 2 voltage/current output channels to drive LED signal indicator lamps.
These devices are extremely compact size (only 34 x 34 x 11 mm) and can also be used in installations where the in-wall space available is reduced.
The digital inputs can interface sensors, traditional buttons, etc; the 2 low-voltage output channels can drive LEDs for synoptic panels or switches.