USBmicro is a USB electrical device interface. It comes in two flavours: the U401 and the U421. The main difference is the form factor.
There’s quite a lot of documentation on the site how to program and install them
Kadtronix sells the unit with interface software, making the programming quite a bit easier
They also have a good tutorial, with instructions how to fit it to a motion detector
Robin
razor@edgarbv.com
https://www.edgarbv.com