A wear detection device is disclosed herein. The wear detection device may comprise: a housing including a transparent tube, the housing configured to receive a photoconductive fluid; a first casing disposed at a first end of the housing; and a power source disposed in the first casing, the power source configured to power a transmitter in response to the transparent tube being exposed to light. An electrical circuit may be closed in response to an entire length of the transparent tube being exposed to light or only a portion of the transparent tube being exposed to the light.