_x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ Feature: _x000D_ 1. This product has the function of voltage display and USB output (mobile phone charging). There are only two wiring, which is simple. It can be used for DC power supply in the voltage range of 8-40v or 12V and 24V batteries. The two USB ports can output 5V 2A (maximum) and automatically distribute the output current. _x000D_ 2. This product is designed with universal size (48 * 29mm) and installed with square hole direct snap, with strong universality. _x000D_ _x000D_ Specification: _x000D_ Display resolution: (DC8-40v) 0.01V when less than 10V and 0.1V when greater than 10V _x000D_ Display mode: three digit 0.28" LED nixie tube _x000D_ Display color: Red / Green / Blue _x000D_ Refresh speed: About 200ms / time _x000D_ USB output: 5V2A (maximum current 2A, two USB automatic distribution) _x000D_ Input: 8-40v (available for 12V and 24V batteries) _x000D_ Operating temperature: - 10 ~ 65 _x000D_ Overall dimension: 48 * 29mm _x000D_ Opening size: 46 * 27mm _x000D_ Lead length: 20cm _x000D_ _x000D_ Tips: _x000D_ 1. 40V is the limit input voltage of this product. Do not exceed this voltage when using. In particular, it should be noted that the reverse electromotive force generated by the motor or relay, switch, etc. in the circuit will be superimposed on the power supply voltage, causing permanent damage to the product; _x000D_ 2. This product is not waterproof and dustproof. Attention should be paid to waterproof, moisture-proof, dustproof and shockproof in use. _x000D_ _x000D_ Note: _x000D_ Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! _x000D_ Please allow 1-2cm measuring deviation due to manual measurement. _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ 1 xDigital Voltmeter _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_