This tool is suitable for daisy chaining in systems below 50V 10A, and is used to monitor voltage, current, power, watt-hours, amp-hours, time and curve, it can meet the observation needs of most engineers for system pairings. If you are interested in this product, come and try it, it will not disappoint you. Features: LCD Display Screen: This monitor adopts a large LCD display to show the test voltage, current, time and other data for you, you can easily read the results. Easy to operate: You can press and hold the "power/side" button to turn it off or on and set the "power/side" button to change the display side. If the system power is unstable or the voltage is less than 4V, it is recommended that you use a sintall backup battery (not included) so that data is not lost. Portable Size: This monitor is small in size and easy to carry, you can easily put it in your tool bag. 5-in-1 Testing Function: This monitor can real-time display voltage, current, power, watt-hour and amp-hour for you. Wide Applications: This monitor can meet the observation needs of most engineers for system parameters. Specifications:Material: Printed Circuit Board Voltage: DC 0 - 50V Source : DC 0 - 10A Voltage: 0 - 99h-1s Power: 999.9W Hour Rate: 50000WhAmp Hour: 999Ah Curve Duration: 1 Hour/1 Day Package Size: 80*50*50mm / 3.1*2.0*2.0in Package Weight: 40g / 1.4ouncePacking List:1 * Multi-function MonitorMany questions about Dropshipping Services are following:1. How many orders can you handle per day? We are a large company in Shenzhen, China, with a large warehouse that can handle large orders every day. We ship countless packages every day. We can guarantee the order you request.2. How fast can you process orders? We will arrange the shipment as soon as possible after you pay for your order. Priority delivery for dropshipping order3. Can you ship an order without any receipts, invoices and promotional offer inside the package? Absolutely! No invoices, receipts, promotional offer if you leave notes on the order (if you want, we can deliver.)4. If you need other products? We can supply most of the products you need as much as possible1If you have any other questions, please feel free to . We are very grateful for your cooperation with you.5. We can support Dropshipping of CSV/Excel files.6. There is no limited inventory to fulfill orders on a daily basis