Conductive Rubber Sheet - 200x200x1mm tensile sensor

Module dedicated to projects related to air quality monitoring. It uses the popular ENS160 and BME280 chips and provides a variety of environmental data such as Air Quality Index (AQI), TVOCs levels, CO2 equivalent (eCO2), atmospheric pressure, humidity and temperature. It communicates via the I2C interface and offers two Qwiic connectors. SparkFun SEN-22858

KAmodVL6180X is a module that allows to measure light intensity (ALS), distance to the object and recognition of gesture. It has an embedded voltage regulator and voltage level translators on signal lines. Thanks to this can be used in systems with 2.8...5.5V power supply voltage.

The module allows you to attach a strain gauge (working in the Wheatstone bridge circuit) and convert the analog signal into its digital representation, available on the module output lines. The system processes the signal with a 24-bit resolution and can be powered by 2.7V - 5.5V. The module is especially recommended for constructing digital scales in combination with Arduino

Non-contact liquid level sensor. It allows you to detect liquids without the need to immerse the sensor in the liquid. Digital output. DFRobot FIT0212

A compact Hall-effect current sensor that provides accurate DC and AC current measurement within a ±10 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 5454

Module with PIR EKMB1107112 motion sensor, power consumption in standby mode up to 1 uA. The board communicates via I2C and is equipped with a Qwiic connector. SparkFun SEN-17375

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 5262

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

Module with a knock-on sensor for measurement of methane, propane and carbon monoxide (MQ-9) concentrations. The module has an analogue output and an output triggered by exceeding the threshold of sensitivity.

Module with a digital barometer LPS22. It enables pressure measurement in the range from 260 to 1260 hPa and communicates via I2C or SPI. Adafruit 4633

Module with 3 QTR type optocoupler with RC (digital) output. The module operates from 2.9 V to 5.5 V, detects objects at a distance of up to 30 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4103