💎【FT232RL FTDI Mini USB to TTL Serial Port Module】: From a stability point of view, the FT232 series is the most reliable and can be used to debug programs without worrying about the blue screen. | ⚡【Working Voltage】：3.3V/5.5V | 🥇with 500MA self-restore Fuse; | 🥈RXD/TXD transceiver communication indicator; | 🥉Support Win95/98/98se/ME/2000/XP/win7 32bit 64bit /Vsita/, do not Support Win8

💎433MHz RF Wireless Transmitter: MX-FS-03V; Receiver: MX-05V. | ⚡【Working Voltage】: DC 5V | 📐【Launch Distance】: 20-200M | 📐【Receiving Sensitivity】: -105DB | 🥇This module is versatile - e.g. wireless outlets, alarm systems, lights and else. Let your creativity run free.

💎MF RC522 is a highly integrated contactless (13.56MHz) card reader chip. | ⚡【Working Voltage】: 3.3V | 🥇Low voltage, low cost, small size contactless card reader MF RC522 chip | 🥈MFRC522 Supports MIFARE series higher-speed contactless communication, bidirectional data transmission rate up to 424kbit/s | 🥉RFID RC522 Module is a better choice for the development of smart meters and portable handheld devices

Items available: nickel-plated models and gold-plated models, please select the desired. | The pin is the standard size of 4mm diameter, fitted for most speakers worldwide。 | Plastic Handle Color: Red, Black | Screw connector fitting no soldering required for 20 AWG to 14 AWG speaker wires。 | External design: you can connect multiple banana plugs at the same time, multi-device connection.

💎The MAX3232 is a popular RS232 to TTL converter module, commonly used for communication between microcontrollers and devices that use RS232 serial communication. | ⚡Operating voltage: 3.3V~3.5V | 🥇Using MAX3232 chip, higher reliability and better tolerance. | 🥈Adopt 2.54mm standard interface, which can be more easily installed on other circuit boards. | 🥉Support RS232 and TTL two standards, can realize seamless conversion between low voltage mode and high voltage mode.

⚡Support USB to parallel printer port and EPP or MEM parallel port | ⚡Have UART and SPI / I2C working status indicator | ⚡The output voltage and signal level can be selected from 3.3V or 5V | ⚡Support USB to UART, I2C, SPI interface | ⚡Package Includes:1x DollaTek CH341A USB to UART/IIC/SPI/TTL/ISP adapter EPP/MEM Parallel converter

💎Original chip CP2102, generate COM port after installing the driver | ⚡【Working voltage】：3.3V-5V | 🥇【Standard input】：MICRO MINI-USB cable | 🥈Supports baud rates from 300bps ~ 1Mbps between | 🥉Containing clock circuit, no external circuit device

-Stable and reliable CP2102 chip, generate virtual serial port after installing the driver | -Support 3.3V and 5V STC full Series MCU Programming. | -Perfect support for the highest baud rate 115200! Applicable to STC12 series, STC11 series, STC15 series! | -On-board status indicator, transceiver indicator, the status indicator will be always on after the driver is installed correctly, the transceiver indicator will flash when communicating, the higher the baud rate, the lower the brightness. | -Supports Windows 98SE, 2000, XP, Vista, Window7, Mac OS 9, Mac OS X & Linux 2.40.

💎【DB9 Adapter】: RS232 Serial DB9 D-SUB 9Pin to Terminal Breakout Board | ⚡【Voltage】：300V, Current 10A. | 📐【Size】：35 x 33 x 15mm(L*W*H) | 🥇【Application】: DB9 adapter terminals to facilitate the project, site commissioning equipment. | 🥈【Merchandise included】：1Pcs Male DB9 Male Adapter；1Pcs Female DB9 Male Adapter；1Pcs screwdriver