Product size: 155mm*21mm*26mm Features: 1. Non-contact voltage detection; 2. Sensitivity can be adjusted; 3. Flashlight lighting function; 4. Triple sound and light alarm on screen; 5. The display shows the induction intensity; 6. Powered by two AAA batteries. AC detection range: 12V~1000V/48V~1000V. Detection frequency: 50Hz~60Hz. Alarm mode: sound and light alarm/display indication. Lighting torch: white LED lighting. Fire wire zero judgement: according to signal strength, signal strength is fire wire. NCV Sensitivity: You can change the sensitivity via S key. LCD Indicator Screen: Red is live wire, green is zero wire or low wire. ground. Operating Temperature: 0-40. Storage temperature: -10~50, humidity: 95%. Dual Sensitivity and Range: Voltage tester can detect voltages in two voltage ranges: 12V-1000V / 48V-1000V (adjusted by inchSinch key). The probes NVC sensor recognizes the voltage and displays it on the LED Indicator. It meets many needs in residential, commercial and industrial environments. Non-Contact Voltage Tester: The voltage detectors insulated housing ensures safety. As the voltage signal strength changes, the indicator increases or decreases, and the frequency of flashes and beeps becomes faster or slower with the signal strength. Auto shut-off and flashlight function : Automatic shutdown let you save and control electricity; Equipped with a flashlight on the tip, allows it to be used in the event of a power outage or in dark environments; Pocket clip makes it easy to attach. Our services: 1 x Voltage Detector; 2 x 1.5V AAA battery; 1 x Manual.