Handheld transmitter for remote control of the winch valve on the Alstor (Only those with an on/off button on the back and that are yellow). This is how you pair it with the machine's receiver.
Turn on the new transmitter. Hold down the in/out button and turn on the ignition on the machine. Hold for a few seconds and release the in/out buttons. Turn off the ignition. Turn it on again and it is ready to use.