High-quality 4-digit digital display meter module with memory function QF C04 DC4-40V

Function:1. The product has a memory function; data will not be lost when the power is turned off.2. With a 4-digit digital display, the display range is 0 to 9999.3. Wide voltage operation, supports DC4-40V.4. The adoption of high-quality electronic components and a precision manufacturing process ensures durability.5. With accumulated data memory function +1, erase, and power-off.Specification:Item Type: Counter ModuleOperating Voltage: DC 4-40V4-Digit CounterCounting Range: 0-9999Package List:1 x ModuleNote:1. The external sensor must be NPN normally open. 2. The positive terminal of the module is connected to the positive terminal of the power cord, the other is connected to the negative terminal.