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This module provides precise, galvanically isolated current measurement within a range of ±30 A and voltage up to 480 VRMS, providing RMS, instantaneous, and active, reactive, and apparent power readings. Equipped with an I²C interface, 4-pin JST SH connectors, and 2.54 mm pins, it allows for easy integration with Qwiic, STEMMA QT, and standard microcontrollers. Configuration stored in EEPROM allows for defining address and overload thresholds. The sensor offers three voltage measurement ranges (120 V - default, 240 V, 480 V RMS) and the ability to detect overvoltages. Built-in protection and low conduction resistance ensure safe and accurate measurements. The version comes with soldered screw terminals and a 240 Vrms jumper. Pololu 5412
The ACS37800KMACTR-030B3-I2C Power Monitor module is an advanced measurement board based on an Allegro Microsystems IC, designed for monitoring voltage, current, power, and other parameters in AC and DC systems. The device supports bidirectional current measurement from −30 A to +30 A and voltage measurement configuration up to 480 VRMS (±980 V peak). With galvanic isolation of the measurement path and secondary isolation of the I²C interface, the module ensures high measurement accuracy and user safety.
The sensor provides RMS and instantaneous readings, automatically detects zero crossings, and calculates active, reactive, and apparent power, as well as power factor. With a 1 kHz bandwidth, it is suitable for various energy and industrial applications. The integrated Hall-effect current sensor offers an isolated current path, low conduction resistance (0.85 mΩ), and high common-mode noise immunity. The board includes a resistor network optimized for 120 VAC, 240 VAC, and 480 VAC operation, enabling adaptation to a wide range of applications.
The communication interface is I²C, accessible via JST SH 4-pin connectors (compatible with Qwiic and STEMMA QT) or standard 2.54 mm pins. Configuration settings are stored in EEPROM, allowing customization of parameters such as device address and overload detection thresholds. The default I²C address is 0x60. Logic is powered by 3 V to 5.5 V, and the built-in isolated DC-DC converter powers the sensor circuit with 3.3 V.
The ACS37800 sensor measures current flowing from IP+ to IP−, which are clearly marked on the board along with a +i arrow indicating the positive current direction. Voltage is measured between IP+ and V− points on the left side of the board, with positive readings corresponding to higher voltage on IP+. For convenience, all through-holes on the left side are electrically connected, allowing power to be connected internally and load externally.
The board has two surface-mount jumpers that allow configuration of one of three voltage measurement ranges for the ACS37800 sensor. These ranges are optimized for 120 V, 240 V, and 480 VAC RMS. Each range supports overvoltage detection, handling transient voltages about 40% above the nominal peak voltage. This means the sensor can measure up to twice the nominal RMS voltage before reaching saturation, improving safety and accuracy under varying operating conditions. By default, one jumper is open, allowing measurement up to 240 VRMS.
The module also provides an EN input to disable logic power for energy savings. Multiple connection options are available: large 4 mm holes (for wires up to 10 AWG or ring terminals), screw terminal pads with 9.5–12 mm pitch, and smaller 2.54 mm and 5.08 mm pads for pin headers. The PCB includes isolation slots to increase creepage distance. This makes the module versatile and ideal for testing and implementing energy, industrial, and laboratory measurement solutions.
Manufacturer BTC Korporacja sp. z o. o. Lwowska 5 05-120 Legionowo Poland sprzedaz@kamami.pl 22 767 36 20
Responsible person BTC Korporacja sp. z o. o. Lwowska 5 05-120 Legionowo Poland sprzedaz@kamami.pl 22 767 36 20
This module provides precise, galvanically isolated current measurement within a range of ±30 A and voltage up to 480 VRMS, providing RMS, instantaneous, and active, reactive, and apparent power readings. Equipped with an I²C interface, 4-pin JST SH connectors, and 2.54 mm pins, it allows for easy integration with Qwiic, STEMMA QT, and standard microcontrollers. Configuration stored in EEPROM allows for defining address and overload thresholds. The sensor offers three voltage measurement ranges (120 V - default, 240 V, 480 V RMS) and the ability to detect overvoltages. Built-in protection and low conduction resistance ensure safe and accurate measurements. The version comes with soldered screw terminals. Pololu 5411
No product available!
This module provides precise, galvanically isolated current measurement within a range of ±30 A and voltage up to 480 VRMS, providing RMS, instantaneous, and active, reactive, and apparent power readings. Equipped with an I²C interface, 4-pin JST SH connectors, and 2.54 mm pins, it allows for easy integration with Qwiic, STEMMA QT, and standard microcontrollers. Configuration stored in EEPROM allows for defining address and overload thresholds. The sensor offers three voltage measurement ranges (120 V - default, 240 V, 480 V RMS) and the ability to detect overvoltages. Built-in protection and low conduction resistance ensure safe and accurate measurements. Pololu 5410
No product available!
Module with ACS723 current sensor with a measuring range of AC and DC ± 5 A. It communicates via an analog interface. SparkFun SEN-13679
The ACS72981 current sensor module uses the Hall effect to accurately and safely measure AC and DC current, providing electrical isolation of the current path. With a wideband analog output (up to 250 kHz) and low conduction resistance (0.2 mΩ), it minimizes energy loss and offers a fast response time of less than 2 µs. Pololu 5251
INA169 current sensor module. The system can be supplied with the voltage from 2.7 V to 60 V and has an analog output. SparkFun SEN-12040
The ACS72981 current sensor module uses the Hall effect to accurately and safely measure AC and DC current, providing electrical isolation of the current path. With a wideband analog output (up to 250 kHz) and low conduction resistance (0.2 mΩ), it minimizes energy loss and offers a fast response time of less than 2 µs. Pololu 5258
The ACS72981 current sensor module uses the Hall effect to accurately and safely measure AC and DC current, providing electrical isolation of the current path. With a wideband analog output (up to 250 kHz) and low conduction resistance (0.2 mΩ), it minimizes energy loss and offers a fast response time of less than 2 µs. Pololu 5253
Module with INA237 sensor designed for power monitoring. Allows measurement of voltages up to 85 VDC and current up to 10 A. Uses a 16-bit ADC for precise and accurate readings available via the I2C interface. Adafruit 6340
No product available!
The ACS72981 current sensor module uses the Hall effect to accurately and safely measure AC and DC current, providing electrical isolation of the current path. With a wideband analog output (up to 250 kHz) and low conduction resistance (0.2 mΩ), it minimizes energy loss and offers a fast response time of less than 2 µs. Pololu 5272
ACS724LLCTR-20AU current sensor module with a current measurement range from 0 to 20 A. It communicates via an analog interface. Pololu 4044
A compact Hall-effect current sensor that provides accurate DC and AC current measurement within a ±30 A range with galvanic isolation. It features a high-sensitivity analog VOUT output with a 150 kHz bandwidth, enabling fast and precise readings in dynamic systems. The module operates over a wide temperature range of -40°C to 125°C, and the low current path resistance minimizes energy loss. Its small size and flexible mounting options make it ideal for prototyping, industrial systems, and space-constrained projects. Pololu 5447
No product available!
This board is a simple carrier of Broadcom’s bidirectional ±40A ACHS-7124 Hall effect-based linear current sensor, which offers a low-resistance (~0.7 mΩ) current path and electrical isolation up to 3 kV RMS. Pololu 4033
Module with ACS724LLCTR-30AU current sensor with a measuring range of direct and alternating current from 0 to 30 A. It communicates via an analog interface. Pololu 4046
Precision Hall effect current sensor offering galvanic isolation, wide bandwidth of 150 kHz and the ability to measure AC and DC current with very low power loss. Thanks to differential measurement and immunity to magnetic interference, it is perfect for applications requiring accurate current monitoring, such as power supplies, converters or motor control systems. Pololu 5295
The ACS72981 current sensor module uses the Hall effect to accurately and safely measure AC and DC current, providing electrical isolation of the current path. With a wideband analog output (up to 250 kHz) and low conduction resistance (0.2 mΩ), it minimizes energy loss and offers a fast response time of less than 2 µs. Pololu 5256
Module with a current and voltage sensor dedicated to Feather boards. Can measure voltage up to 26 V and current up to 3.2 A. Based on INA219 sensor, I2C communication. Adafruit 3650
The ACS72981 current sensor module uses the Hall effect to accurately and safely measure AC and DC current, providing electrical isolation of the current path. With a wideband analog output (up to 250 kHz) and low conduction resistance (0.2 mΩ), it minimizes energy loss and offers a fast response time of less than 2 µs. Pololu 5255
The current measurement with a value of 0 - 5A is realized by the ACS712-05 system based on the Hall effect. The system sensitivity is 185mV / A (analog signal).
This module provides precise, galvanically isolated current measurement within a range of ±30 A and voltage up to 480 VRMS, providing RMS, instantaneous, and active, reactive, and apparent power readings. Equipped with an I²C interface, 4-pin JST SH connectors, and 2.54 mm pins, it allows for easy integration with Qwiic, STEMMA QT, and standard microcontrollers. Configuration stored in EEPROM allows for defining address and overload thresholds. The sensor offers three voltage measurement ranges (120 V - default, 240 V, 480 V RMS) and the ability to detect overvoltages. Built-in protection and low conduction resistance ensure safe and accurate measurements. The version comes with soldered screw terminals and a 240 Vrms jumper. Pololu 5412