Relay Timer R4X is programmable timer software to control relay manually and automatically. It works with 4-channel relay controller boards of National Control Devices.
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To control your relay with Relay Timer R4X, you need connect your relay board with your computer and Set Configuration in Relay Timer R4X to make sure the connection is available. You need to select the type of your relay board and the connection way.
It’s very easy to control relay manually. You just need to click the switch button to turn on or turn off relay.
Click 
button down 
to step into manual mode.
Click the switch button 
to turn on the relay. The light becomes green.
Click the switch button 
to turn off the relay. The light becomes red.
