Model Number : CountersType : 4-digit CountersDIY Supplies : ELECTRICALBrand Name : Aideepen : Mainland ChinaCertification : noneFeatures:1.The product is made of high quality material, service life, quality assurance2. The product has a memory function, the data will not be lost when the power is switched off3. 4-bit digital display, display range 0-99994. Low level effective, wide voltage work, support DC4-40V5. With cumulative +1, clear zero, power failure data memory function6. Two digital tube colours are available: blue and red.Parameter:Product Name: Counter ModuleOperating voltage: DC4-40V (recommended for use under 5-35V)Current: 30mA (under 12V)Input: counting (+1), clear, low level activeDigital tube specifications: 0.56 inchesDigital tube: 4 digitsDigital tube display colour: red/blueCounting range: 0-9999Counting speed: 0-200Hz (i.e. up to 200 times per second)Notes:1. The external sensor must be NPN normally open type.2. The positive pole of the module is connected to the positive pole of the power cord, and the negative pole is connected to the negative pole of the power cord.Package include:Counter Module X1