Gravity: LED Button - module with a button and LED backlight (blue)

The arduino turbidity sensor detects water quality by measuring level of turbidity. It is able to detect suspended particles in water by measuring the light transmittance and scattering rate which changes with the amount of total suspended solids (TSS) in water. SEN0189

Keyboard module with five colored buttons. The board is equipped with a Gravity connector and has an analog output. Powered with the voltage of 3.3 V or 5 V. DFRobot DFR0075

Module with a PIR motion sensor. It can detect movement up to 7 meters with a detection angle of 100 degrees. DFRobot SEN0171

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 10 A. DFRobot SEN0288

I2C multiplexer module with TCA9548A system. Allows you to connect up to 8 devices. The system works like a gateway - it transmits I2C interface data to one of the 8 main busses. This allows you to connect up to 8 devices with the same address. DFRobot DFR0576

Module with DHT20 temperature and humidity sensor. It allows you to measure humidity in the range from 0 to 100% and temperature from -40 to 80℃. DFRobot SEN0497

Module with liquid level sensor. The set includes a current-voltage converter that generates an analog signal. DFRobot KIT0139

LM35 analog temperature sensor module for Arduino. DFRobot DFR0023

Sensor that detects the concentration of ozone. Equipped with a factory calibrated probe. It communicates via the I2C interface, UART or analog output. DFRobot SEN0472

Analogue temperature and humidity sensor module based on SHT30 sensor. It is characterized by high reliability and stability with low energy consumption. It is compatible with 3.3V and 5V controllers, such as Arduino, micro:bit, ESP32. DFRobot DFR0588

Module with a button, LED diode and a green cap. DFRobot DFR0029-G

Gravity: The high temperature sensor is a sensor based on the PT100 probe and adapted to very high temperatures (30-350 ° C). The module is powered by 3.3 ... 5.5V voltage. DFRobot SEN0198

Heart rate measurement module compatible with Arduino and Raspberry Pi (Gravity: Heart Rate Monitor Sensor For Arduino). It uses PPG technique, which in a simple and cheap way is able to measure the changing volume of blood. DFRobot SEN0203

Gravity: Digital 10A Relay Module is a module with 10A 35VAC / 30VDC relay compatible with devices with control signals in the range of 2.8 ... 5.5V. DFRobot DFR0473

TCS34725 RGB Color Sensor is a color sensor TCS34725 controlled by the I2C interface. It is powered by voltage in the range of 3.3 ... 5V and is intended for Arduino-compatible boards. DFRobot SEN0212

4-digit, 8-segment LED display module with 8-level brightness adjustment. Communication via the I2C interface. DFRobot DFR0645-G