Features: High hardness and good electrical conductivity. Maintenance electrical measurement / screwdriver assist. Humanized clip design for easy electrical maintenance and portability.No keys operation and automatic shut-down after about 5 minutes without inductive signal. Fully insulated anti-fall material, durable and improved safety performances. Self-checking high-brightness bulbs: high-brightness works smoothly and still clearly visible in the sunlight.Uses: can be used in electronic factories, electrical appliances, car maintenance, household, etc., widely used. Specifications: Material:ABS Test Voltage Range: AC12-300V Powered By: 1 x AAA-Batteries (Not included) Size:Approx.14.7x2.3x2.6cm/5.79''x0.91''x1.02'' Note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Voltage Detector