Camera Accessory Sets features: Lcd digital panel wattmeter energy power meter voltage voltmeter current ammeter frequency indicator ac 220v 380v 100a(Spm003-220vac) Color: we send based on the color or size of the main image of the product page. Quantity：we send based on quantity on title, if there is no quantity in the title, we send based on description. Colour:Spm003-220vac Features: 1. Auto-saving: when power off, the electric energy will be saved. The saved electric energy will be accumulated continue when the meter power-on next time. 2. According to connection graph, connect the green wire of secondary current transformer to the blueterminal of meter and make the wire of measurement circuit through the hole in the current transformer. 3. Supply power and start to measure and display the result. 4. Press down the button last for 5 second, the electric energy will to be zero. 5. Caution: (1)The meter will be destroyed when you make wrong connection method with voltage input(green terminal) and secondary current transformer (blue terminal). (2) The meter can only use to measure 50Hz AC city electricity, it will be destroyed when use to measure square wave, output of inverter and correction sine wave. Description: Wattmeter energy power meter with high definition LCD digital display screen, easy to read clearly and accurately. Specifications: Brand: SINOTIMER Model: SPM003 AC voltage: AC 80.0-300.0V/300.0-450.0V AC current: AC 0-99.99A, minimum resolution is 0.01A AC current: AC 0-40.00A, minimum resolution is 0.01A Accuracy: 1% 2 words Active power: 0-45000W Electric energy 0.000-99999kwh Power factor: 0.00-1.00PF Frequency: 45-65Hz Size: 79*43*48mm Installation Size: 76*39mm Package Included: 1 * Power Energy Frequency Meter 1 * CT Current Transformer