Responsive Electrical Tester Pen

😍This is the perfect addition to your kit with our responsive electrical tester pen. Using high-quality and durable accessories and with 4 functions on it to allow you to be prepared all the time. MAIN FEATURES 【Safe＆High-quality】Our tester pen is composed of high-quality and durable PVC Handle, screw rod, slotted point screwdriver, nut, spring, neon bulb tube and resistance block, which ensure the safety while using 【Self Check Function】In self-check before use, please hold the pen tip with one hand and touch the tail with the other hand.When the light is on, it means the tester pen is normal and has sufficient power. No light indicates that the battery needs to be replaced. 【Automatically Induction】As long as it is close to the insulation of the wire, the plastic shell of the electrical appliance, etc., when the light is on, it means that the line is live. The brighter the light, the higher the voltage of the tested circuit, and vice versa. 【Find Line Breakpoints】One hand