DSC321 AT24C32 with Real Time Clock RTC Battery

Wired Bone Conductor Transducer - 8 Ohm 1 Watt
This amazing speaker does not have a movable cone like most From the speakers you've seen, instead, a small metal rod is wrapped with the voice coil.
When the current is driven through the coil, the magnetic field makes a piece of metal expands and contracts, if pressed against a flat surface or cavity makes it a speaker! Often these size transducers are pressed against the jaw or ear bone to turn the skull into a speaker socket.
The effect is a perfect quality sound that comes from your head and no one else can hear it. You can also press it against your elbow bone and stick a finger in your ear to listen to the audio transmitted through your arm!

Mini Dongle WiFi USB For pcDuino, Nano, Raspberry Pi.

The buzzer plate for Lilypad is used for the development and application of configurations that require a buzzer to indicate, for example, warnings, warnings or as part of the correct operation of your device.
Lilypad is a wearable E-textile technology developed to have large connection pads to attach to clothing. Lilypad Buzzer features:
- Operating voltage: 5 VDC
- Design of common anode
- PCB density: 0.5 mm
- Density of the buzzer: 20 mm
- Outside diameter: 20 mm

MAX98306 3.7W Stereo Amplifier - Class D Stereo Audio Amplifier 8 Ohm.

USB DC 5V Bluetooth Audio features:
- You can connect it with your smartphone
- Power: DC 5V micro USB
- Speaker: 4 ~ 8 Ohm - Audio Jack: 3.5mm
- SD card: support MP3 / WMA / WAV / FLAC format
- The transmission distance could be up to 10m
- Size: 50 x 40 mm

Blink any color you need! Use the Tri-Color LED board as a simple indicator, or by pressing the red, green and blue channels, you can create any color. Very bright output.
This is a common anode design: to turn on a channel, you simply need to ground one of the R / G / B pins to illuminate that channel.
Lilypad is a wearable E-textile technology developed to have large connection pads to attach to clothing. Lilypad Tri-Color LED RGB features:
- Operating voltage: 3 - 5 VDC
- Design of common anode
- Density of the PCB: 0.8 mm
- Outside diameter: 20 mm

WiFi Smart Wall Switch Sonoff T1 Gang 86

Smart WiFi RF APP Touch Control Wall Light Switch features:
works with Amazon Alexa,  Google Assistant DIY Smart Home, Nest  via iPhone Android.

You can easily control any device over the Internet through your phone, computer, etc.
The module can handle 5 users at the same time, it can work in two modes: STA (client) and AP (access point).
In AP mode, the module is connected via WIFI directly to your phone or computer (in open field can be up to 300 meters).
In STA mode, the relay module is connected to the access point (router) that supplies the network.
Wi-Fi in the room where the relays are located. In this case, the range mainly depends on the power of the access point antennas (routers).
You should not turn off after the configuration is completed, as some of the parameters of the WIFI module cannot be saved when power is cut off.