Use Way: When measuring the line of fire all indicate the red light on; The alarm indicator light flashes simultaneously; The buzzer sounded an urgent alarm Non Contact: Breakpoint search using induction pen to identify the principle of electric field signal; Slowly search along the route to quickly find the fault breakpoint Intelligent Identification: Power on test, intelligent identification ; Simple operation and no contact is safer; Upgrade non interference measurement more accurate Low Power Consumption: Low power LED high light beads with concentrator lens; Auxiliary lighting in blackout or dark environment Accurately Measure: Upgrade intelligent chip to automatically filter interference signals; Accurately measure SPECIFICATIONS: Item Type: Electric Test Pen Model: HT90 Material: ABS Purpose: Circuit Detection Range: 12V-1000V Sensitivity Range High: 12V-1000V Sensitivity Range Low: 48V-1000V Frequency: 50Hz-60Hz Alarm: Visual and Audible Lamp: LED Flashlight Operating Temperature: 0°C-40°C Storage temperature: -10°C – 50°C, humidity: ≤ 95% Size: 150x25x25mm / 15×2.5×2.5 cm Weight:Approx. 35g Power supply: 2 x 1.5V AAA batteries (not included) Detection Voltage: Ac Voltage: 12-1000V, 50/60hz Application Environment: Operating Temperature: 0-40℃ Storage Temperature: – 10-50℃ Humidity: ≤ 95% Altitude: ≤ 2000m Package List: 1 x Electric Test Pen 1 x User Manual NOTES: Due to the different monitor and light effect, the actual color of the item may be slightly different from the color shown in the pictures. Please allow a measurement deviation of 1 to 2cm due to manual measurement. :The device is delivered without batteries Product weight : 0.07 kg/2.46 ounces Package dimensions: 16.21×10.32×2.6 cm / 6.38 x 4.06 x 1.02 inches 120sets/box OEM – 30days