Model Number : 3-Bit Red 0.36in Digital Tube Display Trigger Counting BoardType : 3-digit CountersDIY Supplies : MetalworkingBrand Name : Aideepen : Mainland ChinaCertification : noneDC 5V 12V 24V Power-ON Counter Module Accumulator 3-Bit Red 0.36in Digital Tube Display Trigger Counting Board with memoryFeatures:1. Small size and simple application, free choice of different modes.2. Efficient and stable performance, working life.3. Use a wide range of references.Specifications:Working voltage: DC4-7V/DC7-16V/DC15-26V (free choice of voltage range)Display: 3-digit nixie tube, 0.36 inch, redMC03-1: Count +1 each time the power is turned on, the maximum is 999, if it exceeds the maximum, it will start from 0, and the power will save the dataMC03-02: The power will not automatically add 1, every short-circuit KEY count +1, the maximum value of 999, more than the maximum value will start from 0, power will save dataOperating instructions:1. Each power on, the count will automatically add 1 (if you do not need the power count plus 1 function, please select MC03-02).2. Each short connection of the two solder joints in the KEY position will add 1.3. How do I reset to 0? In the power state, short connect the two solder joints in the KEY position for 3 seconds, and the release will immediately clear the zero, and the value will return to 0.Package list:Counter module *1