Features 1. 【Flexible】: high precision and fast response, the sensitivity of this voltage test pen is adjustable, dual-range AC 12V-1000V and 48V-1000V, you can choose different ranges according to your needs. 2. 【Use】: When the device is close to AC voltage within the specified voltage range, it emits LED lights and beeps without touching the object to be measured, to support adequate safety measurement applications. 3. 【Maintenance】: Small in size, the non-contact voltage measuring pen is easy to store in the toolbox or carry around, and can distinguish the wire and the neutral wire through the alarm sound of different frequencies. 4. 【Energy Saving】: LED light and low voltage indication, low voltage LED and warning light prompt remind you to replace the battery in time, the white LED light can work normally in the dark environment. 5. 【Parameters】: The default AC voltage measurement range is 48-1000V. By adjusting the sensitivity, it can measure 12-1000V. Safety sound and light alarm, and the voltage frequency is distinguished by the buzzer and LED indicator. Specification: Condition: 100% Brand New Model: HT100 Ac Voltage Range: 48V-1000V / 12V-1000V Frequency: 50Hz / 60Hz Alarm Mode: Sound And Led Light Alarm Voltage Level: Low, Medium, High Flashlight: Synchronous Led Ligng Low Voltage Indicator: Yes 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