Features 1、Sensitivity adjustable: dual range AC 12V-1000V / 48V-1000V, different ranges can be selected according to needs 2、Different voltage test and dual range test, wire and neutral can be distinguished by alarm sounds of different frequencies; the default AC voltage measurement range is 48-1000V, and 12-1000V can be measured by adjusting the sensitivity, which is suitable 3、Non-contact voltage tester, When the device is close to the AC voltage within the specified voltage range, it emits LED lights and beeps without touching the object under test to support adequate safety measurement applications 4、LED light and low voltage indicator, Low voltage LED and warning light prompts to remind you to replace the battery in time, white LED light can work normally in dark environment; no automatic operation for 5 minutes to save energy 5、Safe sound and light alarm, Distinguish voltage frequency with buzzer and LED indicator. Its sound is enough to hear the noise of medium-sized machinery Specification Features: 1. Sensitivity adjustable: dual range AC 12V-1000V / 48V-1000V, different ranges can be selected according to needs. 6. Small size, easy to store in the toolbox or carry around. Specification: Condition: 100% Brand New Model: HT100 Frequency: 50Hz / 60Hz Alarm Mode: Sound And Led Light Alarm Flashlight: Synchronous Led Lighting Power: 2 1.5V AAA Batteries (no included) Working Temperature: 0~40°C Storage Temperature: -10~50°C Altitude: <2000 Meters Weight: Approx. 47g / 1.7oz Size: Approx. 155 * 24mm / 6.1 * 0.9in Package List: 1 * Non-contact Test Pen Package List