How do I know the Walabot DIY 2 is on? August 02, 2021 07:20 Updated When you see a blue light or Green light on the device, your Walabot is on. Related articles What do the other colored lights indicate? How do I update the software? What are the two Teflon strips for? What phones work with the Walabot DIY 2? What types of walls can the Walabot DIY 2 scan?