In order to turn on Repeater mode in any xUV product, you:
1) Power the device
2) Hold down the menu button for 15 seconds. After the LED blinks amber 3 times, release. You are now in the advanced menu. If the relay is clicking on and off you did not hold the button long enough. Wait for it to stop and try again
3) Press and release the Select button 5 times. The LED should be blinking a 6 amber blink pattern
4) Press and release the Menu button, it should now be blinking a single amber pattern.
5) Press and release the Select button once, it should now be blinking a double green blink pattern
6) Press and release the Menu button. it should now be blinking a red pattern, (Most likely a three pattern if repeater mode is disabled, but it could also be one or two.)
7) If the red LED doing a 3 red blink pattern, press and release the select button 2 times, it should now be a 2 red blink pattern.
8) Press and release the Menu button. The LED should go solid green for a few seconds then start its blink pattern again.
9) Wait one minute for the device to exit the advanced menu