Description: DC voltage: 500V AC voltage: 500V Resistance: 10MQ Voltage frequency: 1000Hz Buzzing on/off: when the measured resistance is less than 30 Contactless voltage detection alarm: 6V~1000V AC voltageMaximum displayed value: 2000 digits Automatic shutdown time: about 5 minutes Operating temperature and humidity: 0~40 ( Power supply mode: 1.5VAAA battery 2 (not included) Specifications: 1. [Non contact pen design]: easy to operate and carry. 2. [Double sensitivity mode]: (high: 12~1000V/low: 48~1000V). The product sensitivity can be adjusted freely according to the actual use scenario. 3. [Self inspection function]: can effectively judge whether the product can work normally and avoid misjudgment. 4. [Multi function]: With inductive dangerous voltage alarm, direct/zero line difference, direct connection positioning, on-off test, AC/DC voltage, resistance, frequency, flashlight lighting characteristics, etc. 5. [Alarm mode]: sound light (red/green). Package Included: 1 * Host 1 * Probe 1 * Instructions