Passive Buzzer 5V

The new SensorTag IoT kit invites you to realize your product idea connected to the cloud.
The new SensorTag now includes 10 low-power MEMS sensors in a small red package.
And it's expandable with DevPacks to make it easy to add your own sensors or actuators.
Connect to the cloud with low-power Bluetooth and Get your sensor data online in 3 minutes.
The SensorTag is ready to go right away with an iOS and Android app, no programming experience to get started.
The new SensorTag is based on The CC2650 Wireless MCU, which offers 75% less power consumption than previous Bluetooth low energy products.
This allows the SensorTag to run on batteries, and offers years of battery life with a single coin cell battery.

ESP32-S3-DevKitC-1-N8R8 general-purpose development board based on the ESP32-S3R8-WROOM-1 chip, Flash 8MB, PSRAM 8MB.

This module is used to extend the Raspberry's 40 GPIO pins to another set of 2x20 male pins and 8 parallel pins accessible on the terminal blocks in the that test leads are pushed. The electronic board offers great reliability with the Raspberry and is very easy to connect thanks to its existing suitable accessories but not included.
The module offers a set of mini jumpers to configure the GPIO.

433.92 MHz radio receiver module that allows you to also control it via a radio remote control. You can control each channel either by remote control, the free APP "eWeLink" or with wizards such as Alexa or Google Home. This will allow you to create scenes, schedules, and much more. Its relay supports up to 4 devices simultaneously. Each device can be powered by 5-24 V DC.

SONOFF DUALR3 is a WiFi based 2-gang switch that can independently connect and control two connected devices or lights - this simply means that 1 SONOFF DUALR3 control switch is equivalent to 2 Sonoff basic switches!

GSM A6 Four Band GPRS Module with MCU Antenna features:
- GSM / GPRS module / development board / shield based on GPRS A6
- Supports GSM / Dual band GPRS, available for remote GPRS and SMS data transmission
- Compact size and low current consumption
- With energy saving technique, current consumption is as low as 5mA (sleep mode)
- Communicates with the microcontroller through the UART port, supports the command including GSM 07.07, GSM 07.05 and Ai-Thinker Enhanced AT Commands
- Working frequency: four-band network, 850 / 900/1800 / 1900MHz
- Operating voltage: 4.8-9VDC (Supply power of the on-board regulator circuit for the A6 module)
- Working current: 2A maximum
- Current Sleep: 5mA

This Openlog serial data module is an open source logger that works with a serial connection Simple and supports Micro SD cards up to 64GB. It can store or record huge amounts of serial data and act as a black box. It includes an ATMega328P chip with a high frequency of 16 MHz. All recorded data will be stored on the Micro SD card.

NodeMcu module based on ESP8266 controller and programming in Lua language.
NodeMcu is equipped with 10 GPIO, PWM, I2C, 1-wire and ADC.
ESP8266-12E is an improved version of ESP8266-12.
It works as a standard WiFi 802.11 b / g / n 2.4 GHz.
USB communication - the CH340 chip. Characteristics of ESP 12E:
- Supply voltage: 3.3V (LOGICAL LEVELS: 3.3V)
- Supported protocols: 802.11 b / g / n
- Network support: 2.4 GHz
- Band: 2400 (MHz)
- Wi-Fi Direct (P2p), Soft Access Point
- TCP Stack / Integrated IP
- PLLs, Regulators and Integrated Power Management Units
- Output Power: 0.15 (W); + 19.5dBm in 802.11b mode

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!

CNC Shield + UNO R3 CH340 +4x A4988 Stepstick 3D Printer Arduino kit features:
- Content:
* 1x UNO R3 CH340 Compatible with Arduino
* 1x CNC Shield V3
* 4x A4988 Drivers
* 4x Heatsinks for A4988
* Jumpers