Feature:
1. Multifunction: It can detect the state of the open phase and the sequence of the phases through LED and buzzer
2. Frequency Range: 20Hz to 400Hz, equipped with red, green, yellow LED indicates the buzzer, which can meet the needs of daily work
3. Stable Performance: Fast and accurate measurement, efficient, effective, reliable, easy and safe to use
4. Good Material: Made of high quality ABS material, lightweight, wear resistant and resistant, and have a long service life
5. Convenient to Use: Equipped with a special test clip, insert the test clip on the metal probe of the test and tighten it, then it can be conveniently clamped anywhere for measurement

How to Use:
Connect the test probe of this instrument to the wire to be tested (cannot be pinched directly by hand), which can be a wire end, socket or the middle part of the phase wire (when measuring in the middle part of the phase wire, the insulation layer of the wire needs to be stripped Go, the wire core inside can be measured. At this time, pay special attention to safety to prevent electric shock. For the convenience of users, there is a special test clip in the instrument accessories. Insert the test clip on the metal&