ESP32 is a single-chip 2.4 GHz Wi-Fi and Bluetooth combo chip designed with TSMC ultra-low power 40 nm technology. It is designed and optimized for the best power performance, RF performance, robustness, versatility, features, and reliability, for a wide variety of applications, and different power profiles.

ESP32 is the most integrated solution for Wi-Fi + Bluetooth applications in the industry with less than 10 external components. ESP32 integrates the antenna switch, RF balun, power amplifier, low noise receive amplifier, filters, and power management modules. As such, the entire solution occupies a minimal Printed Circuit Board (PCB) area.

ESP-WROOM-32 ESP32 ESP-32S Development Board 2.4GHz Dual-Mode WiFi + Bluetooth Dual Cores Microcontroller. The ESP32 is integrated with Antenna switches, RF Balun, power amplifiers, low-noise amplifiers, filters, and management modules, and the entire solution occupies the least area of PCB. 2.4 GHz Wi-Fi plus Bluetooth dual-mode chip, with TSMC Ultra-low power consumption 40nm technology, power dissipation performance, and RF performance is the best, safe and reliable, easy to extend to a variety of applications.

This ESP8266 Serial Port To Wi-Fi Module, FL-M1S  serial transceiver module, based on ESP8266 SoC with an integrated TCP/IP protocol stack It can either host the application or offload all Wi-Fi networking functions from another application processor.

ESP8266 has powerful onboard processing and storage capabilities allowing it to integrate with sensors and other devices through GPIOs with minimal development up-front and minimal loading during runtime.

Its high degree of on-chip integration allows for minimal external circuitry, and the entire solution, including the front-end module, is designed to occupy minimal PCB area.

The ESP8266 WiFi module is an easy to use and popular module for the development of Internet of Things – IoT and WiFi related projects and applications.This low cost module greatly simplifies building IoT products. The ESP8266 Module is available in many variants. This ESP-01 Variant is the most popular and easy to interface module.

This module is suitable for multiple projects both easy and complex form turning an LED on and off, switching a device on and off, uploading data to the internet and cloud, etc. It can also communicate with multiple sensors and devices through its input pins with minimal external components.

GSM SIM800C Modem with Antenna Module’s baud rate is configurable from 9600-115200 through AT command. The GSM GPRS Modem is having internal TCP/IP stack to enable you to connect with the internet via GPRS. It is suitable for SMS, Voice as well as DATA transfer applications in the M2M interface.

The onboard Regulated Power supply allows you to connect a wide range of unregulated power supply. Using this modem, you can make audio calls, SMS, Read SMS, attend the incoming calls and internet, etc through simple AT commands.

The Modem is built with Quad-Band GSM/GPRS engine-SIM800C from SIMCOM, works on frequencies 850/ 900/ 1800/ 1900 MHz.

HC-05 6 Pin Wireless Serial Bluetooth Module is a Bluetooth module for use with any microcontroller.  It uses the UART protocol to make it easy to send and receive data wirelessly.

The HC-06 module is a slave only device.  This means that it can connect to most phones and computers with Bluetooth but it cannot connect to another slave-only device such as keyboards and other HC-06 modules.  To connect with other slave devices a master module would be necessary such as the HC-05 version which can do both master and slave.

The Bluetooth Transceiver HC-05 TTL Module with enable/disable button Breakout is the latest Bluetooth wireless serial cable! This version of the popular Bluetooth uses the HC-05/HC-06 module. These modems work as a serial (RX/TX) pipe.The remote unit can be powered from 3.3V up to 6V for easy battery attachment. All signal pins on the remote unit are 3V-6V tolerant. No level shifting is required.

HC-12 wireless RF UART communication module is a new generation of multi-channel embedded wireless data transmission module. The Radio frequency of 433.4 – 473.0MHz, can be setting a communication channel, step is 400kHz, a total of 100 channels. The module maximum transmit power is 100mW (20dBm), and -116dBm receiver sensitivity air of the 5000bps baud rate, communication distance about 500 meters.
The module adopts a stamped hole encapsulation method, which can be welded. The module size is 27.4mm*13.2mm *4mm (including antenna seat, not including the spring antenna), which is convenient for the customer to be embedded in the application system. The module has a PCB antenna seat ANT1, users can use the coaxial cable, the use of 433MHz band external antenna.