1. The signal generator is small in size, has many functions, easy to operate and easy to carry.2. The key layout is reasonable, all functions have independent corresponding keys, easy to operate.3. Built-in battery, low power consumption, long standby time.Feature: 1. Double Protection: The voltage meter is designed with a shockproof protective cover, double protection is safer to use and more assured2. Supported Functions: The voltage meter has functions such as AC voltage, AC current, resistance, capacitance, inductance, diode, triode on off test, temperature and frequency, etc3. Bracket Design: The voltage meter has a bracket design on the back, which is easy to place and easy to observe data4. Backlight Display: The voltage meter is a large screen HD backlight display, unit sign display, clear numbers without ghosting, easy to operate in dark environments5. ABS Material: The voltage meter is made of ABS material, which is wear resistant and durable. Use 6F22 9V battery (not included) Specification: Item Type: Voltage MeterMaterial: ABSBattery: 1 x 6F22 9V (not included)Uses: AC Voltage, AC Current, Resistance, Capacitance, Inductance, Diode, Transistor On Off Test, Temperature and FrequencyVoltage: 200mV/2V/20V/200V/1000VAC Voltage: 2V/20V/200V/(700V/750V)Current: 2mA/20mA/200mA/20AAC Current: 2mA/20mA/200mA/20AFrequency: 20kHz/200kHzResistance: 200/2k/20k/200k/2M/20MCapacitance: 2nF/20nF/200nF/2uF/200uFTo Enter and Exit Manual Ranging Mode:1. Press the "range" Key.The Meter Enters Manual Range Mode and the "auto" Sign Disappears. Each Time the Range Key is Pressed, the Range Will Increase by One Step. when the Highest Gear is Reached, the Meter Will Cycle to the Lowest Gear.Note: After You Enter the Reading Hold Mode, if You Manually Change the Range, the Meter Will Exit the Mode.2. to Exit Manual Ranging Mode, Press and H