RF Wireless transmitter and receiver kit 433Mhz

433MHz RF Wireless Transmitter and Receiver Kit is a simple, low-cost wireless communication set used for sending digital signals over the air. It is ideal for remote control projects, wireless sensors, alarms, and Arduino/ESP32 DIY applications. The kit typically includes a 433MHz RF transmitter module and a 433MHz RF receiver module that work together for basic one-way data transmission.

Key Features

• Frequency: 433MHz (ISM band)

• Kit Type: RF Transmitter + Receiver pair

• Supports common DIY RF protocols (with encoding/decoding libraries)

• Works with microcontrollers: Arduino, ESP32, ESP8266, STM32

• Easy wiring (VCC, GND, DATA pins)

• Suitable for remote ON/OFF and simple wireless sensor data

Full Specifications (Typical)

Exact range and performance depend on antenna, voltage, environment, and module type.

Transmitter Module

• Operating Voltage: typically 3V–12V (many common TX modules)

• Output Power: increases with higher supply voltage (within rating)

• Data Input: 1 digital data pin (ASK/OOK modulation)

• Use: Sends data from MCU encoder/library to air

Receiver Module

• Operating Voltage: typically 5V (some RX modules support 3.3V versions)

• Data Output: 1 or 2 digital data pins (varies by board)

• Modulation: ASK/OOK reception

• Sensitivity: suitable for short-to-medium range DIY links

Communication

• Modulation: ASK / OOK (most common 433MHz cheap modules)

• Direction: Usually one-way (simplex) per transmitter/receiver pair

• Recommended Antenna: external wire/coil antenna for best range

Applications

• Wireless doorbell / remote switch projects

• Home alarm and sensor transmission

• Wireless temperature/humidity sensor nodes

• Arduino remote control / RC switches

• Garage-style remote signal experiments

• IoT prototypes (simple RF link)

Used In

• Arduino UNO/Nano wireless projects

• ESP32/ESP8266 with encoding libraries

• PT2262/PT2272 style remote control circuits

• DIY home automation triggers (with proper receiver decoding)

Package Includes

• 1× 433MHz RF Transmitter Module

• 1× 433MHz RF Receiver Module