O SM5100B é um módulo GSM miniatura, quad-band 850 / EGSM 900 / DCS 1800 / PCS 1900, que pode ser integrado num grande número de projetos sem fios. Você pode usar este módulo para realizar quase qualquer coisa que um telemóvel normal pode - mensagens de texto SMS, GSM / GPRS, o TCP / IP, e muito mais!

Módulo 433MHZ LORA com alcance 3000m.

The Module KA2284 is a Battery, Power and Audio Level Indicator.

Arduino Development Board Module ESP8266 with WiFi OLED.

The imported PL2303HX controller can stabilize the flash at high speed. With a 500mA auto-recovery fuse for protection and two data transmission indicators that can monitor the data transfer status in real time. The entire board is coated with a high-quality transparent heat-shrinkable layer, rendering the PCB in a state of isolation from the outside, so that the board is not burned. Electrostatic package, ensures that the plate will not be damaged before use. Supports WIN7 system.

LinkIt Smart 7688 Duo - Arduino to Linux

The HC-12 433MHz Transceiver is a wireless communication Module, which is based on the RF SI4463 chip, has a built-in microcontroller and can be configured by AT commands, the maximum output power is 100mW (20dBm) and the receiver sensitivity differs from: 117dBm to -100dBm, depending on the transmission speed. Accepts 3.2V - 5.5V and can be used with 3.3V and 5V UART voltage devices.

This ESP8285 ESP M2 Module provides easy-to-use WiFi for any UART port and is compatible with the HC-06 Bluetooth modules. If your project uses Bluetooth, it is very easy to convert it to WiFi. Using the integrated web interface, WIFI-UART communication can be configured for TCP or UDP sockets on any port.

NodeMcu consists of open source firmware and a development kit that helps to prototype your IoT (Intemet of Things) project through some lines of Lua language. The NodeMcu has integrated ESP-12 serial WiFi with GPIO, PWM, ADC, I2C and 1-WIRE capabilities, integrates USB-TTL serial with super reliable industrial strength CH340 for superior stability on all supported platforms.

When you assign a high level to the module pin, the electro magnet can suck magnetically conductive objects. Otherwise, it will release the object.

An electro magnet is a type of magnet in which the magnetic field is produced by electric current. An electric current flowing in a wire creates a magnetic field around the wire, due to the Ampere Law. To focus the magnetic field on an electro magnet, the wire is wound into a coil with many twists of wire side by side. The Magnetic Field of All Twists of the Wire passes through the Coil Center, creating a Strong Magnetic Field there.

It's Easy to Use to Learn the Electro Magnet Principle.

Now you can go home and rest! With this Electrical Outlet Schuko with Wifi App, you can remotely control your fixtures, saving time and energy!

Smart Dual Power Plug with WiFi, Smart Plug, with App compatible with Android and IOS.

Development Board ESP32-DEVKITC-S1.