Expand your Doorbell from Nedis Smart Video with this Doorbell from Door Wireless. That way, you always know if someone is at your door, even if you don’t have your smartphone within reach or are off. You just need to connect it to a USB port and select the melody and volume with the SmartLife app. Connects wirelessly to the doorbell for maximum flexibility.

SparkFun Luminosity Sensor - TSL2561

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

The NCP1402 is a 3.3V DC-DC converter. 

The RM433 Remote Control is an advanced version of 433MHz 4-Button RF. Designed with 8 buttons to perform various functions performed on different types of devices. Like fan speed adjustment, brightness setting, etc.

Want to control when one of the devices you have connected to a USB port is turned on or not? With the new Sonoff Micro USB Smart Switch Control, you'll be able to control it on your mobile phone, program it to activate when you need it and whatever you have in mind. With a small size and high performance, this Switch is your best ally every day.

Place this Smart Switch on the power line of any wired device to turn it on and off remotely or to program it automatically. Take control of the connected device using your voice when using this switch with Amazon Alexa or Google Home.

This is a fantastic find for SFE. A small, high-quality, quad-band, standard SMA terminated, cellular antenna.

This is a simple to use Light Sensor that outputs an analog value from 0 to 5V.

Blink any color you need! Use the Tri-Color LED board as a simple indicator, or by pulsing the red, green, and blue channels, you can create any color. 

A Mechanics Laboratory to Build a Buggy and a Quad Bike.

This will be a treat for your ears! The Hamburger Mini Speaker is a 3W economical speaker option for any project needing stand-alone sound. 

The SparkFun Fuse Breakout Kit comes with everything you need to assembly & use a glass capsule, inline fuse (ferrule type) for your project. The simple breakout design allows for a barrel jack and the option for a screw terminal to be used for (VIN) power input and a second screw terminal used for VOUT. Any 5mm x 20mm glass capsule fuse can be used with this kit depending on your project needs but we have been sure to include a 250VAC, 500mA one to get you started. Make sure to check out the related products and add additional fuse in your cart as a replacement for prototyping and testing.

FemtoBuck LED Driver - SparkFun

Use the Shelly button as a safe way to use Shelly 1, Shelly 1PM and Shelly Dimmer off the wall. Enhance your experience with Shelly products. The Shelly Button combines elegant design with many features. The button can make any table light, fan or heater smart!

Use the Shelly button as a safe way to use Shelly 1, Shelly 1PM and Shelly Dimmer off the wall. Enhance your experience with Shelly products. The Shelly Button combines elegant design with many features. The button can make any table light, fan or heater smart!

Doors and windows that can be used as entrances and exits are the weakest points in the security of your home. An unprotected door or window is like an obvious "Welcome" sign for a thief, so the Sensors of Door/Window are also known as the "Entry Sensor" . As one of the most popular home security devices, the Sensor of Door and DW2-RF Wireless Window is smart enough to know if your door or window is open and you can not only send alert notifications, but also notify you when the entry point is opened, ensuring the security of your home.

The MINIR2, like the MINI's rugged Diy Two-Way Smart Switch, has been redesigned to bring safety and performance to an optimum level. The small and compact smart switch is used for different types of switch boxes, even the smallest standard EU switch box. Convenient to automate your appliances in the eWeLink app with your mobile phone or by voice command.

This LilyPad Coin Cell Battery Holder has a small slide switch installed on the board, in-line with the power so you can shut off your project and save batteries.