Module with air quality sensor SGP30. The board is equipped with a Grove connector and communicates via the I2C interface. Seeed Studio 101020512

Compact current sensor Pololu 5306 based on the CT432-HSWF50DR, designed for measuring current in the 0–50A range at 5V supply in applications requiring galvanic isolation and analog voltage output. Pololu 5306

Compact current sensor Pololu 5310 based on the CT433-HSWF20MR, designed for measuring currents up to ±20A at 3.3V supply in applications requiring galvanic isolation and analog voltage output. Pololu 5310

Precision Hall effect current sensor, providing galvanic isolation and wide 250 kHz bandwidth. Low conductive path resistance, magnetic interference immunity and ratiometric analog output make it ideal for AC and DC current monitoring applications. Pololu 5281

Compact current sensor Pololu 5303 based on the CT432-HSWF65MR, designed for current measurement in the range from -65A to +65A at 5V supply in applications requiring galvanic isolation and analog voltage output. Pololu 5303

Compact current sensor Pololu 5302 based on the CT432-HSWF50MR, designed for current measurement in the range from -50A to +50A at 5V supply in applications requiring galvanic isolation and analog voltage output. Pololu 5302

Compact current sensor Pololu 5301 based on the CT432-HSWF30MR, designed for current measurement in the range from -30A to +30A at 5V supply in applications requiring galvanic isolation and analog voltage output. Pololu 5301

Module with OTP-538U non-contact temperature sensor. The board is equipped with a Grove connector and has analog outputs. Seeed Studio 101020062

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 5250

The analog pH meter, specially designed for Arduino controllers, with the connector (Gravity series). It has an LED which works as the Power Indicator, a BNC connector and PH2.0 sensor interface. The pH measurements at ± 0.1pH (25?). SEN0161

Module with BME680 sensor for measuring environmental conditions such as concentration of volatile organic compounds (VOC), atmospheric pressure, temperature and humidity. I2C or SPI communication. SparkFun SEN-16466

Adafruit Universal Thermocouple Amplifier MAX31856 is an amplifier module for thermocouples. It was based on the MAX31856 chip. The module is fitted with K, J, N, R, S, T, E or B thermocouples. The SPI interface is used for communication. Adafruit 3263

Module with BME280 environmental sensor. It allows you to measure temperature, humidity and pressure. The sensor is equipped with two communication interfaces: SPI and I2C (Qwiic). SparkFun SEN-15440

A modern current sensor combining the Hall effect with an inductive coil, which allows for precise measurements of both the DC and AC components up to 5 MHz. Thanks to its lightning-fast response time and low path resistance, it is perfect for motor control systems, power converters and protection systems. Pololu 5232

Compact current sensor based on TMR technology, enabling precise measurements up to 30 A with minimal energy losses. Thanks to a wide 1 MHz bandwidth, galvanic isolation and interference immunity, it is perfect for applications requiring fast response and high accuracy. Pololu 5317

Compact expansion with advanced data monitoring features, equipped with temperature, humidity, light sensors and RTC clock. With low power consumption, battery monitoring function and I2C protocol support, it is ideal for long-term battery-powered projects, offering precise measurements and efficient power management. Seeed Studio 114993446

Large Carrier version current sensor from Pololu, model 5299, based on the ACS37220LEZATR-200B5 IC, designed for measuring current in the range from -200 A to +200 A at a 5 V supply in applications requiring galvanic isolation and analog output. Pololu 5299

A robust sensor for approximate measurement of nitrogen, phosphorus and potassium (NPK) levels in soil, ideal for precision farming and field applications. With a rugged design (IP68), RS485 MODBUS-RTU communication and a wide power supply range, it allows easy integration with Arduino-type systems and operation in harsh environmental conditions. DFRobot SEN0605

Module with an analog AC current sensor in a set with a probe for non-contact measurement of alternating current with a current of up to 5A. DFRobot SEN0287

Precise sensor measuring UV radiation in the range of 240 to 370 nm, directly outputting UV index value (0-11) and hazard level (1-5). Thanks to I2C and UART interface support and compact design, it is ideal for environmental monitoring, health protection and optimization of photovoltaic installations. DFRobot SEN0636