Car digital display test pen circuit detection pen car test lamp digital display test pen electrical circuit detection 5V-48V

Product Features

* Suitable for automobile mechanical maintenance
* Breakpoint detection, induction detection, voltage detection
[Product Function]:
1. Test automobile circuit short circuits and open circuits.
2. Circuit discrimination test
3. Car battery performance test
4. Charging system performance test
5. Ignition system performance test
6. Engine performance testing is suitable for 6-12-24V/DC automotive electronic control systems

[Notes]:
The test range is 6-12-24V. It is prohibited to apply beyond the voltage measurement range of this test pen. The
test pen is an automotive test pen and is strictly prohibited from being used on civil circuits or lines above 24V.
The difference in the measured voltage will cause The brightness of the luminescent tube is different, which is normal.
The head of the test pen is sharp, so please use it with care and keep it out of the reach of children.

[Instructions for use]:
1. Test pen function and instructions for use
1. Measuring whether the battery is good or bad: Stop for more than eight hours and check the battery voltage. Both batteries are above 12.2 volts, which proves that the battery is good. If the voltage of one battery is below 11.9 Prove that the battery does not store electricity!
2. Measure the power generation: After the two batteries are connected, the small clip is stuck to the negative pole, and the needle is inserted into the positive pole (do not touch the connecting wire) and the car is idling. After ten minutes, the power generation should be 27.9 to 28.3, too low or too high will affect the battery life!
3. Measure whether the fuse is good or bad: stick a small clip to the ironwork of the body, and use a needle to prick the two contact aluminum points behind the fuse, one side has power and the other has no power. The fuse blew.
4. The sensor can be measured with a five-volt power supply.
5. It can measure the battery power of a family car. If the vehicle has been stationary for more than eight hours, the small clip is stuck to the negative pole. When the light test needle is inserted into the positive pole, the battery power should be above 12.2 volts. After driving the car for ten minutes, the generator power generation should be between 13.8 and 14.2 volts. between, otherwise it will affect the battery life!