Features:1. Non-contact voltage detection and non-metallic pen body make surethat you won't be shocked by the electricity. 2. Equipped with flashlight, convenient for maintenance at darkness. 3. Testing voltage ranges from 12V to 1000V, which is suitable forhousehold appliances. 4. Made of high quality engineering plastic, pen body is hard, wear-resistanceand insulated. 5. Built-in intelligent chips achieves sound light alarm, autosensitivity, auto shutdown, NCV null and live line test and other functions. Specification:Brand: PEAKMETERModel: PM8908C Auto Power Off: Yes Low battery indication: Yes Live/Null Wire Identification: Yes NCV Sensitivity: Automatically selecting 3 kinds of sensitivity (High,Medium, Low) Voltage Sensitivity: AC 12V-1000V Frequency: 50-60Hz Alarm Mode: Sound light Flash Light Color: White Operating Temperature: 0-50 (2-122) Storage Temperature: -10-50 (14-122) Humidity: < 85% RH Battery: 2pcs 1.5V AA Batteries (NOT included) Size: 16*2*2cm/6.30*0.79*0.79inWeight: Approx. 64g Package Includes:1 x Voltage Tester (Batteryis NOT included) 1 x User Manual .