Check the listing for details. YB20 LED Mini Display Module DC 2.5V-30V DC2.8-30V Voltmeter Volt Panel Meter. Condition: New. Listed at 2.70 USD. YB20 Two Wires DC Voltmeter DC 2.5-30V 2.8-30V Mini Digital Voltage Meter Power Supply DC 3.3-30V LED with Red Blue Green Digits Attention: 1, The test voltage can not exceed the maximum voltage, otherwise the voltmeter will be damaged. It is recommended to reserve some space. 2, This meter has no case and the PCB board is exposed. Technical Parameters: Dimension:33*15mm Power consumption: 120mm Test voltage: DC2.5-30V/2.8-30V Display mode: 0.36 "LED with red/blue/green digits Lead lenght: >120mm Measurement accuracy: 1% (± 2 digits) Measurement rate: ≥ 500mS / time Features: With two wires,the wiring is simple, the installation is convenient. When there is a small tolerance, you can calibrate by the potentiometer on the circuit board. With polarity protection function for meter power supply. Working conditions: Operating temperature: -10 ~ +50 ℃ Working humidity: 10 ~ 80% (no condensation) Working pressure: 80 ~ 106kPa Sun exposure: no direct exposure Shipment: Worldwide shipping. (Except some remote countries and APO/FPO) We will arrange the shipment as soon as you finish your payment. We only ship to confirmed order addresses. Your order address must match your shipping address. The images shown are not the actual item and are for your reference only. Service transit time is provided by the carrier and excludes weekends and holidays.It may vary, particularly during the holiday season. If you have not received your order after 30 days from payment, please contact us. We will trace your order and get back to you asap. Our goal is customer satisfaction! Delivery Time: Return&Refund: You have 7 days to contact us and 30 days to return it from the date received. If the item is in your possession more than 7 days, it will be considered used and WE WILL NOT PROMISE A REFUND OR REPLACEMENT to you. There are no exceptions! Shipping cost is bear by both seller and buyer in half. All returned items must be in the original packaging and you must provide us with the shipping tracking number, specific reason for the return, and your order ID. We will refund YOUR FULL WINNING BID AMOUNT, upon receipt of the item in its original condition and packaging with all components and accessories included, After both buyer and seller cancel the transaction from aliexpress. or you may choose to have a replacement. We will bear all the shipping cost if the product is not as advertised. Feedback: We maintain high standards of excellence and strive for 100% customer satisfaction! Feedback is very important. We request that you contact us immediately before you give us neutral or negative feedback, so that we can perform up your satisfaction. It is impossible to address issues if we do not know about them.Thanks for your support!