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2. USB Four(4) Relay Output Module RAS-05-15
A general purpose of a programmable USB Relay Module is to be a controller for
connections from a PC's USB port using VCP (Virtual COM port). With a relay
module, users can control devices using their PC. USB Relay controller allows a
PC to control a single external device using simple RS232 commands. Relay is fully
powered from the USB bus. Usually, downloading USB relay board control
software is via open source and free. It is a great device for controlling other
components through a common USB hub without any USB protocol knowledge. In
this dyno system, the relay module is connected to the 3 output ports from the
generator motor and the motor cooling fan, besides being connected to the computer.
3. 1kW metal housing resistors
