The DVPSCM12-SL is a module for the Delta programmable logic controller (PLC) series. It is designed to expand the capabilities of the PLC by providing additional input and output (I/O) channels. The DVPSCM12-SL module offers 8 input channels and 4 relay output channels.

Some key features of the DVPSCM12-SL module include:

1. Digital Input Channels: The module has 8 digital input channels that can be used to connect various devices and sensors. These channels can read the status of external digital signals.

2. Relay Output Channels: The module provides 4 relay output channels that can be used to control external loads such as motors, solenoids, or lamps. These channels can switch on/off based on the program logic.

3. High-Speed Counters: The DVPSCM12-SL module supports high-speed counting capability. It has two 100kHz counters that can be used for applications requiring precise and fast counting.

4. Communication: The module supports communication with the main PLC unit through a serial interface. This allows for exchanging data and information between the module and the PLC controller.

5. Snap-on Design: The DVPSCM12-SL module is designed to be easily mounted onto the Delta PLC controller. It snaps onto the main unit, simplifying installation and ensuring a secure connection.