1、4 digit bright LED light, clear to read. 2、Good stability, high accuracy, and easy installation. 3、Counting value will be retained when power failure. 4、Wide application to automation equipment and test equipments, etc. 5、Compact size, beautiful appearance, and Blue, Green, Red, three color for you to choose. Description: This digital display counter has bright LED light, high accuracy, good stability, and easy installation. The meter retains the number automatically when power off. Features: 4 digit bright LED light, clear to read. Good stability, high accuracy, and easy installation. Counting value will be retained when power failure. Wide application to automation equipment and test equipments, etc. Compact size, beautiful appearance, and Blue, Green, Red, three color for you to choose. Specifications: DC current: 30mA Counting: Plus or minus Counting range: 0-9999 Digit number: 4 digit Size: Approx. 8 x 4 x 2.5cm / 3.1 x 1.5 x 0.9inch Weight: 48g Wire diagram: Terminal 1: Positive Terminal 2: Ground Terminal 3: Signal Ground Terminal 4: Clear Terminal 5: Switch Pulse Signal Terminal 6: Blue wire for increasing Terminal 7: Black wire for decreasing Packaging Include: 1 x Digital Display Counter 1 x 5-pin Cable Note: The 5-Pin cable is used to connect with the counter. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.