USB Relay

Virtual serial port over USB allows you to set two relays on or off, plus read 2 opto inputs (10 to 30Vdc).
Based on the FTDI FT232R chip.

PC connection

USB B connector

Power

Through USB

Input

2 simple optocouplers allowing 10-30Vdc to be detected

Output

2 x relay switches 0 - 250V ac/dc on or off

Enclosure

IP40 - simple plastic