PAM8403 2x3W Digital Amplifier Channel Stereo

This module can be directly controlled by the microcontroller (Arduino, 8051, AVR, PIC, DSP, ARM, ARM, MSP430, from the TTL 8 Channel High Trip 5V 10A Relay Module features:
- Channels: 8 (independent protected with Optocouplers)
- Supply Voltage Vcc: 5Vdc
- Output Current: 10A
- High trip min 3.3V input IN1. ..IN8
- Relay activation current: 5 ~ 10mA
- Isolation: Yes
- Indicator LED: For each channel
- Dimensions: 55x 139mm
- Weight: 120g
COM GND jumper input: connects GND optocouplers and GND of the circuit

This product is a Bluetooth module BLE 4.0 UART without adapter, low energy with serial transceiver.
Logic level conversion circuit. No external level of 5V is needed to become a 3.3V level.
The power input port is protected against the anti-circuit, to avoid the inverted accidental power plug, which leads to the module burn
HM-10, Bluetooth module HM-11 series using IT chip CC2540 / 2541, configuration 256Kb space, support
In commands.
You can change the paper (master and slave mode) and the baud rate, the device name, the pairing of the password and other parameters, convenient and flexible. BLE 4.0 UART Bluetooth Low Energy Module without Adapter features:
- Version AT-09 CC2541 Arduino Android IOS BLE
- Serial transceiver

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 CP2102 chip. Characteristic 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,

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 - CP2102 Chip
Characteristic:
ESP 12E ESP8266 ESP12E NodeMcu Lua Wireless Development Board CP2102 WiFi features:

- 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
- Integrated TCP / IP stack
- PLL, regulators and integrated power management units
- Output power: 0 , 15 (W); + 19.5dBm in 802.11b mode

ESP32 processor development board with WiFi and Bluetooth (BLE) compatible with Arduino Uno shields. It is much faster than the ESP8266 processor (NodeMCU and the like) . Wemos D1 ESP32 R32 WROOM-32 WiFi and Bluetooth features:
Power: 5-12VDC WiFi 802.11 b / g / n / e / i (802.11n up to 150 Mbps) Bluetooth v4.2 BR / EDR and BLE. Compatible with Arduino Uno shields. 6 Analog input. 20 digital inputs / outputs (3.3V) (with PWM functions, interrupt). UART, SPI, I2C communication. Size: 68Ã — 53 mm Micro USB connection. 4Mbytes Flash Memory 520Kb Clock: 240Mhz (a core dedicated to WiFi processing) Temperature: -40C + 85C Current: 250mA (max) Current in saving mode: 0.15mA Operating current: 20mA (without WiFi) Useful links for Arduino / Raspberry programming and projects with Arduino /

The amplifier with high efficiency, in case of 12 V power supply can output 10 W + 10 W power.

NRF24L01 Adapter + Wireless Transceiver 2.4GHz Socket Arduino features:
- The NRF24L01 + module is powered with 3.3V
- This adapter module includes a 3.3V voltage regulator
- You can connect the NRF24L01 module on it at 5V voltage
- Dimensions of PCB: 25x 18mm
- Quantity: Adapter 1 unit

Intelligent 5 metre LED strip by WiFi and RF, great for creating any atmosphere in any room. Change its colour and rhythm from your mobile phone or its remote control. Dance to the rhythm of the lights, copy the colour from your mobile or control the lighting with your voice assistant like Alexa or Google Home. Decorate your home with an infinite number of possible scenes.

The multifunctional relay control module, FRM01, is designed for customers with different synchronization and control needs.
The FRM01 is controlled by the STM8S003F3P6 microcontroller and has 18 different functions.
Each function can be customized to meet customer needs in a variety of time and power control applications.
The FRM01 is equipped with a high-quality power relay, a high-power voltage transistor, red and blue LED indicators, an LED display on a double-sided PCB board.
The output of the board is driven by a high quality power relay capable of controlling the AC and DC loads. Timer Relay Module FRM01 features:
- Operating voltage: 12 VDC
- 4 buttons: SET, SWI, NUM +, NUM-
- Operating temperature: -20 °C - + 60 °C

Transceiver 1km SI4432 433MHz Wireless Transmitter Telemetry features:
- Transceiver based on the SI4432 Silicon Labs chip
- Ultrathin ultra small (16.5 × 17 mm)
- Good harmonics: easy for FCC / CE certification
- Penetration capacity (measured through 8 floors)
- Frequency range: 433.92MHz
- Sensitivity down to -121 dBm
- Maximum output power: 20dBm
- Data transfer rate: 0.123-256 kbps
- FSK, GFSK and OOK modulation
- Power supply: 1.8-3.6 V
- Ultra low power shutdown mode
- Digital indication of received signal strength (RSSI)
- Time to wake up
- Bidirectional antenna switch control and automatic adjustment
- Configurable packet structure
- Preamble detection