PZEM-004TTTL AC communication voltage and current meter box single phase version communication module electronic measureDescription: Features:Made of electronic components, it is solid, and good performance, long service life. It can set the active power threshold and will alarm when the measured active power exceeds the threshold. With energy reset, which can be used for software reset, high precision, fast response and stable communication. Comes with a coating to protect the module. Meter box only, other accessories shown in the picture are not included. Specification:Type: Current MeterMaterial: PlasticFeatures: Voltage & Current Meter, AC Communication, Single Phase Version, Communication Module, Electronic MeasurementDimension: app.7.8x3.7cm/3.07x1.46inColor: As the picture shownType: 1, 2, 3, 4, 5, 6 (optional)Quantity: 1 setNote:1. Please allow 0-1cm error due to manual measurement. Pls make sure you do not mind before bidding.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!Package Included:1 Set x Current Meter