This digital AC voltage and current meter displays voltage and AC current measured separately on the same meter. The meter does not require an additional power supply or AC transformer (the meter is equipped with a small precision transformer), which makes the measurement very convenient and accurate. Widely used in electrical distribution boxes, distribution cabinets, voltage regulators, teaching appliances, small household distribution boxes, etc. 1. measurement accuracy: 0.012 characters 2. measuring range: AC voltage: AC80-300V, AC current: AC0-50A 3. energy consumption : 0.2VA 4. measurement speed: about 2 times per second 5. external dimensions: 70*40*39mm 6. pressed size: 68*38mm (recessed installation) 7. model description. (1) Current50A: The transformer is fixed on the top of the instrument. (2) Current100A: the transformer is separated from the instrument, and the transformer can be installed according to the actual measurement position . (That is, the wire can be extended arbitrarily to the ideal position of the equipment pressed in place). Note: If you are at home: (C45/DZ47) the air switch is installed in the main line, you can monitor the current grid voltage and load current in real time, current * voltage = power (so you can also calculate the current power of all appliances in your home, i.e. how many W. This makes it easy to check for a high current display when you're on the go, so you don't forget to turn off the power. operation of some high-power devices and waste electricity bills and resources. We only sell current and voltage meters, not other items in the picture. Due to differences between monitors, the picture may not reflect the actual color of the item. Please allow for small size errors due to manual measurement.