How to make a factory reset of Blue Extender? Riiot Labs June 18, 2018 06:41 Updated Follow Unplug the device. Maintain the button of the Extender (on the upper part of the device) pressed while plugging in the same time the device. The three lights light up simultaneously. The device is then reset and can be set up again. Related articles What to do with Blue Extender during the winterization? How to install Blue Extender? What is Blue Extender? Blue Extender does not work, what should do? I can not take a measurement / I do not receive the measurements, what should I do? Comments 0 comments Please sign in to leave a comment.