⚡️ Fielect 5pcs Tester Screwdriver: Electric Contact Voltage Detector Pen with Dual Head Slot Phillips, Ideal for Circuit Testing 100-500V Review

【Parameter】- Test Voltage: 100-500V; Circuit Type: AC/DC; Display Mode: Neon Tube Light; Test Head Type: Double Head; Special Function: Zero line and live line recognition,Continuity Test,Double-head Screwdriver. 【Neon Tube Light Display】- The neon tube light of the circuit pen will light when the pen detects voltage; The higher the voltage, the brighter the neon tube light. 【How to Use】- When you use the voltage test electroprobe,before testing,it is necessary to insert the screwdriver to the bottom,hold the finger against the end of the handle.The neon tube turns light when there is electricity and operate safely. 【Two Usage】- Two kinds of applications,one for measuring circuit electrical penand the other for screwdriver.Two types of screwdriver tips on the both end of metal rod-slotted and cross-recess.When you pull out the metal rod,please insert the rod to the deepest position to make full contact. 【Warm Tips】- AC circuit tester light detector is for indoor use only and to avoid strong light.