Gravity: Digital Green LED Light - digital module with LED diode (green)

Module with a button, LED diode and a red cap. DFRobot DFR0029-R

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

Module with an analog MQ4 methane sensor. It is powered with the voltage of 5 V and has an analog output. DFRobot SEN0129

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

Analog pH Meter Pro (SEN0169)

Module with a button and white LED backlight. The board is equipped with a Gravity connector and communicates via a digital interface. DFRobot DFR0785-W

Module with blue LED, digitally controlled. Perfect for people starting to play with Arduino. Equipped with a Gravity interface. DFRobot DFR0021-B

Gravity: Analog Infrared CO2 Sensor is a high precision analogue CO2 sensor. It measures CO2 content in the range of 0 ... 5000ppm and is compatible with all devices with ADC function. DFRobot SEN0219

Gravity: UART MP3 Voice Module is an MP3 sound player module with a built-in 8 MB memory. It is powered by 3.3-5V and controlled by the UART interface. DFRobot DFR0534

Gravity: Digital Crash sensor is a microswitch module (left) often called a limit switch. The module is powered by 5V voltage and has a digital two-state output. DFRobot SEN0138-L

A set with a temperature sensor based on the DS18B20 system in the form of a waterproof measuring probe, a sensor adapter and a cable. Communication via the 1-Wire interface. DFRobot KIT0021

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 a bistable button and blue LED backlight. The board is equipped with a Gravity connector and communicates via a digital interface. DFRobot DFR0785-B

Expansion module for the OpenMV Cam M7 camera. The board has connectors compatible with the Gravity standard. It has digital, analog, serial and I2C pins. DFRobot DFR0578

Module with a buzzer (without generator) controlled by a digital interface. It allows you to generate simple sounds by changing the frequency of the control signal. DFRobot DFR0032