Check the listing for details. 1/2/5/10/20pcs Quality 25V DC Input Voltage Sensor Module Tester Board Arduino. Condition: New. Listed at 2.50 USD. Descriptions: Module introduction:This module is based on the principle of resistor voltage divider designed to enable the terminal interface input voltage reduced by a factor of 5, the analogue input voltage is a maximum of 5V, then the input voltage of the voltage detection module can not be greater than 5V x 5 = 25V (if you use the 3.3V system, the input voltage can not be greater than 3.3V x 5 = 16.5V). Because the AVR chip used is a 10-bit AD, the analogue resolution of this module is 0.00489V (5V/1023), so the voltage detection module detects the minimum input voltage of 0.00489V x 5 = 0.02445V.Parameter:Voltage input range: DC0-25VVoltage detection range: DC0.02445V-25VVoltage analogue resolution: 0.00489VDC input interface: terminal positive to VCC, negative to GND Package include: According to your choice. Payment: PayPal, PayPal Credit, MasterCard, Apple Pay, Google Pay...are all supported. Shipping: Please make sure your address 100% right. Return Policy: If you are not satisfied with the item,any problem,please contact with us before you give a negative feedback,because it doesn't help you at all.we will try our best to help you solve the problems. Feedback: Your satisfaction is very important for us.If you are satisfied with our item or service,please give us a positive feedback and 5-Star DSRs rating. Contact Us: We are very glad to help you,please feel free to contact us whatever any problems.Due to high volume of daily incoming emails and time zone difference,please allow 24 hours for us to reply. About Item: For the funcitonal products in our shop,we make sure that the functions are the same as description,but the actual color and shape may looks a little different from pictures because of the technical improvement and manufacturing variance.Please be advised before you bid.