Features: *Multi-function: active combined power, forward power, reverse power, frequency, temporary power (can be cleared), power factor, current/voltage, power *Active power measurement: 1.0 level accuracy, allowable error within 1% *Wiring method: no distinction between upper and lower cable entry, bid farewell to the traditional wiring method, the wiring method is simpler, the screws are not easy to slip, and it is matched with C45 guide rail *Flame retardant material: The shell is made of thickened ABS flame retardant shell to avoid fire hazards caused by overload of the meter. *Tips for purchasing an electric meter: Choose the current according to the power used. Do not exceed the upper power limit of the electric meter and keep a margin to prevent the electric meter from burning out. Specifications: Part Name: Single-phase multi-function electric meter Color:As show Material: ABS Model: DDSR687 Rated voltage: 220V Frequency: 50/60Hz Accuracy level: 1.0 Power consumption: