Product features:1. High hardness and good electrical conductivity2. Electrical maintenance / screwdriver assistance3. Humanized clip-on design for easy electrical maintenance and portability4. Fully insulated anti-fall material, durable and improved safety performance5. High-brightness LED bulb self-inspection: high-brightness works smoothly and is clearly visible in the sunUses: Can be used in electronics factories, home appliances, car maintenance, home furnishing, etc., with a wide range of usesProduct Specifications:Model: electrician color light metering penLamp beads: high brightness LED lamp beadsType: 1PCShell material: anti-drop insulation PCMeasuring range: 70-250VBit Material: HRA Titanium AlloyProduct length: 15.5mWord batch head: 4mmExposed drill bit: 17mmBattery model:3 LR41 button batteries Packing list:Electrician color light test pen*1Function:1. Neutral / live wire detection: LED test results red light green light indicates live wire, green light indicates neutral wire2. Detection along the line: LED light on means the line is not locked, LED light off means the line is disconnected3. Wire switch: If the plug and wire core are in good condition, the light will be on, if not, it means that the core wire is in poor contact.