DIY LED Power Indicator Kit Power Indicator Power Tester For 2.4-20V Battery

Feature: Power consumption: display full bright 42ma, single lamp display 4ma (the digital tube has a word on one side of the pin is positive) Measuring range: General battery within 2.4-20V Display mode: Multiple light bar display or single light spot display Pcb board size: 2.6 x 4.9 cm Note: The pin on the side with words of the digital tube is the positive pole. Package included: 1 x Resistor 3K 1 x 3296W Precision Potentiometer 5K (502) 1 x 3296W Precision Potentiometer 50K(503) 1 x 6*6*7 tou ch keys 1 x LM3914 DIP Chip 1 x 18P IC Holder 1 x 10 segment digital tube 1 x PCB board