Accuracy: 1.5% 2 words Speed: 2 times per second Size: 79x43x48mm Installation Size: 76x39mm Auto-saving: when power off, the electric energy be saved. The saved electric energy be accumulated continue when the meter power-on next time.<br><br>Range: AC current: AC 0-99.99A, minimum resolution is 0.01A Power frequency: 45.0Hz-65.0Hz Power factor: 0.00-1.00PF Active power: 0-30000W when the active power between 0 and 9999.9W, the display accuracy is 0.1W Electric energy: 0-99999kwh, when the electric power between 0 and 999.99kwh, the display accuracy is 0.01kwh, when between 10000.0-9999.9kwh, the display accuracy is 0.1kwh, when between 10000.0 and 99999kwh, the display accuray is 1kwh. Application Method: 1. 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. 2. Supply power and start to measure and display the result. 3. down the button last for 5 second, the electric energy to be zero. Attentions: 1. The meter be destroyed when you make wrong connection method with voltage 2. The meter can only use to measure 50Hz AC city electricity, it be destroyed when use to input (green terminal) and secondary current transformer (blue terminal). measure square wave, output of inverter and correction sine wave. Specification:B: AC80-300V 100A Color:Black & Red Material:Plastic<br><br>Package Contents: 1set * SPM001 AC LED digital voltmeter<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.