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MAX471 Voltage Current Sensor Module High Precision Detection Board Charge Discharge Monitor

K-TECHNICS
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KSh200.00

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The MAX471 Voltage Current Sensor Module is a compact, bidirectional detection board designed to monitor DC voltage and current in charge and discharge setups. It is commonly paired with microcontrollers like Arduino to measure loads up to 3A and voltages between 3V and 36V. 
Key Specifications
  • Voltage Range: 3V to 36V DC
  • Current Range: ± 3A (Bidirectional)
  • Sense Resistor: 35 mΩ internal resistor
  • Output: Analog voltage proportional to current (1V / 1A)
  • Direction: Open-collector SIGN output indicates charge/discharge 
Module Pinout
  • VT: Voltage sensing pin
  • AT: Current sensing pin
  • SIGN: Direction pin (HIGH for charge, LOW for discharge)
  • GND: System ground 
Basic Wiring Instructions
  1. Connect the GND pin to your microcontroller's ground.
  2. Connect VT to an analog input pin on your microcontroller to read voltage.
  3. Connect AT to a second analog input pin to read current.
  4. Run your supply power (\(V_{in}\)) through the module's high-side sense terminals (often marked as RS+ and RS-) before reaching your load.

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