MTM

MTM-USBStem: USB Microcontroller Module
CONTROL TEST ENVIRONMENTS through a wide-range of IO capabilities and enable communications between a host PC and any module on the BrainStem bus.
$250.00

Devantech USB-RLY06 - 6 x 16A USB relay
This Devantech USB relay board provides 6 voltage-free contact relay outputs with a current rating of up to 16A each. Powered and controlled from any standard USB bus.
$45.54