Check cables for continuity and identify individual wires. Perfect tool to check speaker cable polarity. LED indication for open circuit, shorts and correct or wrong polarity. Push-button operation with auto power off.
Specifications:

1. low power consumption: 10mA max.
2. power supply: 9V battery operated (not incl.)
3. dimensions:
   1. main board: 56 x 40 x 33mm / 2.2 x 1.6 x 1.3"
   2. remote board: 40 x 7mm (1.6" x 0.3")

manual_mk132.pdf

module_diy_kit_guide.pdf