A Module with GPRS Antenna, operation Wireless and SIM Card.

The SparkFun ESP8266 WiFi Shield is an Arduino compatible shield for the ESP8266 WiFi SoC – a leading platform for Internet of Things (IoT) or WiFi-related projects. There are a variety of designs based around the ESP8266, including tiny, modular boards and more accessible development boards like our very own SparkFun ESP8266 

A Whadda Universal Temperature Sensor Mounting Kit, used for measuring indoor and outdoor temperatures, controlling the rise/fall of temperature in homes, equipment, control of temperatures in some processes, visualization of the temperature on your website, control of the temperature of your pool, etc.

A Water Level Sensor 1/2Npt with 0-12VDC, from ProK.

A Water Flow Meter Sensor 6mm Hose designed for your Drinking Water Machine!

Voltage Regulator for 5v Step-Up/Step-Down - Pololu

VL6180X Time-of-Flight Distance Sensor Carrier with Voltage Regulator

The Pololu USB to serial adapter is great for connecting microcontroller designs to a personal computer. The adapter uses 3.3 V signal levels so you can connect it directly to any microcontroller running at up to 5 V without the hassle of an RS-232 to TTL level converter.

This UV Sensor is capable of detecting UV solar radiation using a simple UVM-30A chip. It can be easily configured for projects with Arduino to monitor UV Index, analyze UV-A lamps or DIY projects as plant growth analysis.

Kit Thermostat with LED Indicator - Velleman.

The Grove - Speaker is a module consisting of power amplification and voice outputs. The volume can be adjusted by the integrated potentiometer . With input frequencies at different, the speaker generates different tones. Encoding the music in Arduino, make your own music box yourself!

SparkFun RGB and Gesture Sensor - APDS-9960

SparkFun OpenLog

SparkFun Luminosity Sensor - TSL2561

SparkFun humidity sensor - HIH-4030

The Si7021 is a low-cost, easy-to-use, highly accurate, digital humidity and temperature sensor. 

Life has its ups and downs, so why not measure them? The MPL3115A2 is a MEMS pressure sensor that provides Altitude data to within 30cm (with oversampling enabled).

The purpose of this sensor is to measure the sound intensity of the surrounding environment.

Solid State Relay - 8 Channels

The motor shield is based on the L298 , it is a double complete bridge driver designed to drive inductive loads, such as relays, solenoids, DC and stepper motors. 

This relay shield is capable of controlling 4 relays . The maximum switching power can be 360VA / 90W . It can be controlled directly by the Arduino by means of digital IOs digital with external power of 9v . With integrated xbee socket and APC220 socket, it can be controlled wirelessly via Xbee / bluetooth / APC220 . Make it an ideal solution for home automation and robotics.

The Grove – UV Sensor is used for detecting the intensity of incident ultraviolet(UV) radiation. This form of electromagnetic radiation has shorter wavelengths than visible radiation. It is based on the sensor GUVA-S12D.It has a wide spectral range of 200nm-400nm. The module will output electrical signal which is varied with the change of the UV intensity. UV sensors are used for determining exposure to ultraviolet radiation in laboratory or environmental settings.