Check the listing for details. Mini LED DC2.5-30V Red Volt Voltage Meter Display Digital Voltmeter Self-Powered. Condition: New. Listed at 14.99 USD. Mini LED DC2.5-30V Red Voltage Meter Self-Powered.USA Fast Shipping! Product Features:The voltmeter use 0.36 inch digital tube display, with super small volumeConnection is simple, just need to pick up two lines, a joint reverse protection, then it will not burnStarting voltage is low, only 2.50 V, can correct measurementTo achieve the best measurement precision, the voltmeter will measure the voltage according to the different automatic moving the position of the decimal pointCan be used for measuring 18650 cell phone lithium battery nimh battery and other battery voltage, and motorcycle automobile battery voltageCan be used in all kinds of voltage measurement purposesTechnical Parameters:Power supply:don't need the power supply, direct use of the test voltage as a power supplyMeasurement range: DC2.50 - 30VThe minimum input: 2.50VThe maximum input: 30VOperation temperature:-10Degree~65DegreeDisplay mode: three 0.36 LED digital tubeDisplay color: Redupdate rate:about 500 ms/timePermissible error: 1% (+ / - a word)Physical size: 23 x 15 x 10 mm (L X W X H,not including installation ear)Leadwire length: 15 cmFind Items That You Need In Our StoreCapacitors:Capacitors rangingfrom 1 to 10,000uFand more...Transistors:Multiple transistors,sensors, andmore...LED:LED power supplies,various LEDs,and more...Solder Supplies:Solder tools,PCB repair,and much more...For more great items visit our eBay StoreOur Policy Shipping & Handling:Orders are generally shipped on same day after full payment.We send orders by USPS First Class, every-day at 5:00pm (Eastern Time).All packages are with Tracking Number.International Shipping 10-15 days, and Custom in your country take time too. If you need overnight shipping please contact us. Returns:Please contact us if you want to return anything.We accept Returns only in new condition and including original packing.Refund will be made as soon as merchandise is returned.Sorry We do not refund shipping fee. Feedback:We leave you a positive feedback on the same day you leave us a positive feedback.Application:We are honest and serious because we work for business, please be same for us.We bless your business.Thank You for Your Support.