①. 【6 in 1 Multimeter】 6 types of measurement parameters are displayed simultaneously on one interface, including voltage: AC 40 - 300V, current: 0 - 100A, active power: 0 - 30000W, energy: 0 - 99999kWh, frequency: 45 - 65Hz, power factors: 0 - 1PF. ②. 【Multi - function】 1. Data reset to allow multiple measurements. Press the reset button for five seconds, the electricity meter will be reset. 2. The electricity value will be automatically saved when the power is turned off, and it will continue to accumulate data when the measuring power is reconnected. ③. The KWh consumption meter is made of ABS flame retardant material and high - precision chip, ensuring safe use. The single - phase energy meter has anti - electromagnetic interference ability, low power consumption, accuracy and long service life. ④. 【Better visual experience】 HD color LCD screen, 178° no dead angle, with backlight function, this power meter is clearly visible day and night. ⑤. 【Multiple uses】 This DIN rail ammeter voltmeter is easy to install and can be used in school, market, home, industry, laboratory and other fields. The multi - function digital DIN rail meter can simultaneously measure AC voltage, AC current, active power, power factor, frequency and electric energy. The meter has a full - screen high - definition color LCD screen to display the measurement parameters. ⑥. Wiring steps: Connect terminals 1 and 2 on the bottom left of the meter to the power source to supply power to this electricity meter. After inserting the measuring circuit cable through the circular hole on the right side of the meter, the user can arbitrarily choose the direction of the cable according to the working situation. Note: The neutral or live wire should be inserted into the "Built - in current transformer" hole, the meter will display current, watts and other measurement data.