Measure voltage, current, power, energy consumption, and discharge time of any battery-powered device. Predict model aircraft flight time and choose the best propeller/most efficient motor. Check wiring and connector power loss. Get accurate readings of DC current (0-200A), working voltage (8-60V), power (0-6554W), and energy consumption (0-6554Wh). Determine battery capacity, discharge time, and internal structure protection circuit of the battery. clearly with our backlit LCD screen. The 16 x 2 backlit LCD screen ensures that you can see the power analyzer clearly, even in direct sunlight. Dredge internal heat to the outside with the plug-in auxiliary battery and high-quality tin-copper core for strong load capacity and low resistance. Verify sufficient operating voltage under load, prevent currents from damaging battery, motor control, motors, wiring, and connectors. Verify correct battery charger operation, set the cut-off voltage, and check battery capacity. Detect the receiver and the actual operating current to determine whether UBEC, etc. Suitable for RC drones, DC circuits, solar , boats, , and battery backup . Colour:Black Material:Metal Package Contents: 2 * watt meter 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.