Buy DROK® 2 Wires 0.36″ DC Digital Voltmeter 2.5~30V Red LED Display Panel Volt Meter 12/ 24V Voltage Battery Tester for Car/Motorcycle

4165Uis9ZmL

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Features: 
Cutting size: 23mm x 14mm 
Thickness: 10mm 
Mounting Hole Center Distance: 28mm 
Measure Voltage:  DC 2.5~30V (No Need power supply, measure Directly) 
Input Polarity: DC Voltage 
Measurement Accuracy: 1% (+ / – 2 digit) 
Display: Three 0.36″ digital LED Tube 
Display Color: Red 
Refresh Rate: about 500mS / times 
Operating Temperature: -10°c ~ 65°c 
Reverse protection: have 
when measure 10V below:  the voltmeter display x.xx 
when measure more than 10V, the voltmeter display xx.x 

Wiring: 
Red: Power Supply +,Measure Voltage +,(3.0 ~ 30V DC) 
Black: Power Supply -, Measure Voltage - 

Some applications: 
Measure 18650 batteries 
Measure Cell-phone Lithium Batteries 
Measure Nickel-hydride Battery Pack 
Measure Cars Motorcycles Battery Voltage,Etc. 

Package Includes: 
1x Digital Panel Voltmeter 

  • Two-wires connection: simply connect the red and black wire to positive and negative pole respectively.
  • With reversed connection protection, meaning meter will not burn when connected reversely.
  • 0.36″ LED digits visible display; it requires low voltage to start; if volt is less than 3.5V, the LED will dim but not affect measurement.
  • To acquire best accuracy, its decimal point can move according to different tested voltage(if <10V, two digits show after decimal point; if>10V, one digit shows after decimal point).
  • It can test voltage of 18650 or lithium battery, NiMH battery pack, moto, auto, car, etc; screw potentiometer in back side for more accurate results.