Household numbers display voltage-voltage frequency power factor, power measuring instrument (built-in AC250-450V transformer)

Product size: 54*80*64mm Product name: DIN rail digital display multifunction measurement meter Dimensions: 54X80X64(mm) Protrusion size: 45*16(mm) Measurement accuracy: 1% ± 2 characters Measurement speed: 2 times per second Display: HD LCD color screen Display color: red orange yellow white green blue Installation method: rail type Working test : AC voltage current, frequency power factor Use and wiring method 1 Connect the voltage to be measured to terminals 1 and 2 at the bottom left of the multimeter. 2. The built-in transformer is wired according to the wiring diagram in Figure 1, and the measuring circuit wire passes through the round hole under the meter. The direction of wire penetration is arbitrarily selected by the user according to of use situation. Or pass through the round hole on the top of the instrument and exit from the bottom. The different penetration direction will not affect the measurement results. 3. Connect the external transformer according to the wiring