Cheap as chips and works.
An excellent alternative to more expensive software controlled relay devices. Relays are good about 10,000 operations before intermittence occurs. Still testing for failure. Able to run multiple relays on the same machine without issues. Chips can be addressed by device ID rather than local machine com port . Large USB-B connector is infinitely more sturdy than the micro USB found on other boards. Less problems on a linux machine than windows.
Great overall product.
Verified purchase: YesCondition: New