Current Sensor Module Parameters: In scientific experiments and industry, and need to accurate measurement and control of current and voltage are required, and our voltage and current sensor module are safe, reliable, and highly accurate. When the voltage sensor module does not detect the current passing, the output voltage is VCC/2, the module can measure plus or minus 30A current, the pin 5V power supply, the on board power indicator light, it is convenient for your use. Voltage Sensor Module Parameters: This voltage detection module is designed based on the principle of resistance divider, which can reduce the input voltage of the terminal interface by 5 times. The Arduino analog input voltage is as large as 5V, so the input voltage of the voltage sensor DC0 25V cannot be greater than 5V5=25V (if use 3.3V system, the output resolution is 0.00489V (5V/1023), so the voltage sensor detects that the input voltage is 0.00489V5=0.02445V. Durable and Safe Material: The current sensor module and voltage detection module is made of durable and safe PCB and ABS materials, which has good transmission performance, good conductivity, durability, non-flammability, and corrosion resistance. The terminal sensor module are small in size and light in weight, and the needles on each plate are marked, which is convenient for your connection and use. High Quality: The voltage and current sensor module has excellent performance. The current sensor range module can measure current up to 30A. The voltage sensor module input range of the voltage module is DC0-25V, the voltage detection range is DC0.02445V-25V, the voltage simulation resolution: 0.00489V,so your can refer to this parameter to complete your measurement. Easy to Use: The size of the 30A current sensor is 2.7*1.4*1.4cm, and the size of the 25A voltage sensor is 3.2*1.4*1.3cm. We include two voltage templates and two current sensor measuring module. The positive pole of the voltage is connected to VCC, the negative pole is connected to GND, and the output interface "+" is connected. 5/3.3V, "-" is connected to GND, "s" is connected to the AD pin of Arduino, it is easy to use and can be used in many projects.