1、使用前請注意將筆桿、導線、夾子連接好，形成電路通路。
2、筆桿內的LED有正負極之分，筆尖端作為正極，夾子接地作為負極，接反不能用于檢測電路。
3、測試電路時，請在6V-24V（汽車/摩托車）或36V-72V（電動車）的電壓范圍內使用，超過24V或72V以上電壓容易使筆內的LED發光管燒毀或縮短測試筆的壽命。

Product Description:

1. Please note that before using the pen, wire, clip connected to form a circuit path.
2. the LED pen of positive and negative, positive tip of the pen, clip ground as a negative, reverse can  not be used in the detection circuit.
3. Test circuit used in the voltage range of 6V~24V ( car / motorcycle ) or 36V~72V ( electric vehicles ), the voltage more than 24V or 72V easy to make LED lamp burned or shorten the test pen pen life.

敬告：因為使用針狀物導致受傷的危險系數較高，所以請根據自己的使用習慣或需要改變測試筆金屬端的使用形狀。

Warning: Do not use needles lead to higher risk of injury factor. so according to their own habits need to change the use of the metal end of the test pen shape.