Siemens 3RK1 Series I/O module for Use with Digital I/O modules, IP67 - K20

The Siemens SlimLine counter module is used to send hexadecimal coded count values to a higher-level controller. The count value is increased by one for each valid count pulse at terminal 8. Beginning at 0, the module counts up to 15 and then begins again

Screw-type terminals
Protection class IP20