Use this quick, easy, tester to check the continuity and polarity of camera accessory power cables. Commonly known as 12v Alexa power, 2-pin lemo cables or teradek power, many camera accessories use this connector. Teradek, SmallHD, Preston, and much more. Unlike other 2-pin cable testers, this one can be viewed from any angle and in full daylight. The tester will glow green when the cable is working normally. It will glow red if the polarity is reversed and no light means the cable is not working correctly. For 12-14V devices ONLY! Cap colors will be random to speed up delivery. Contact me if you would like a custom color.