The play detectors examines and shows the wear of various mechanically connected elements. In terms of operation, it has two versions: electro-hydraulic and pneumatic for cars and light commercial vehicles, but only electro-hydraulic is recommended for trucks and buses. It is operated with a 12 V controller, which can be operated with the switch buttons built into the test lamp. Its installation does not require special preparation, as it can also be used on the floor of the workshop, but it can be sunk into the concrete in front of or behind the brake and shock absorber test bench in the shaft or even on a four-post lift or scissor lift.