6PCS Ultra Compact 0.28 Inch Mini Digital DC Voltmeter Voltage Tester High Accuracy LED Display Two Wire Design for 2 5V-30V Circuit Testing 5 Color Options Easy Read Screen (Blue)

Name:0.28 inch ultra-small digital display DC voltmeter head two-wire DC2.5-40V adjustable reverse connection protectionFunction Introduction:1. Range: 2.5-30V (red) 2.6-30V (yellow) 2.6-30V (green) 3.2-30V (blue)2. Equipped with two wires, the wiring is convenient and simple, and it is convenient to access the in-car line of the car/battery car/motorcycle;3. It has the function of reverse connection protection, the reverse connection of the wire will not be burned, and it has the function of fine-tuning;4. Note that the input voltage should not exceed 40V, otherwise there is a risk of burning.5. When the voltage is lower than 3.0V, the display brightness will be dimmed, but it will not affect the correct measurement6. When measuring voltages below 10V, two decimal places are displayed; When measuring voltages above 10V, one decimal place is displayed. It can not only take care of the needs of battery users for measurement accuracy, but also take care of the needs of measuring higher voltages.

• Precision Voltage Detection:Accurate measurement from 2.5V to 30V DC with ±3% tolerance, featuring auto-ranging technology that automatically shifts decimal points. Dual resolution delivers 0.01V precision under 10V and 0.1V accuracy above 10V.
• Smart Color Visualization:Color-Coded LED system (Red:2.5V-30V/Yellow:2.6V-30V/Green:2.6V-30V/Blue:3.2V-30V/White:3.0V-30V) with auto-dimming below 3.0V. Compact 30x11.7x9.2mm housing weighs 4g.
• Integrated protection System:Reverse polarity protection safeguards connections, coupled with micro-adjustment capability for precise voltage calibration.
• Rugged Environmental Tolerance:Stable operation in -10℃ to +65℃ with 10-80% humidity resistance, maintaining accuracy under 80-106kPa pressure at <30mA consumption.
• Universal Mounting Solution:Pre-installed wires with 23x10mm mounting holes for seamless integration with 5V/9V/12V/24V systems in vehicles and battery packs.