Description

The 433MHz RF Transmitter & Receiver Pair is a low-cost, reliable wireless communication kit for short- to medium-range data links. Ideal for Arduino, ESP32, Raspberry Pi, and DIY IoT projects, this module pair lets you send simple digital signals (remote control commands, sensor states, or telemetry) wirelessly using ASK/OOK modulation.

Features

• Operates in the license-free 433 MHz ISM band
• Compact transmitter and receiver modules for easy prototyping
• Simple data interface — perfect for Arduino digitalWrite/digitalRead or serial protocols with encoders
• Low power consumption on the transmitter; plug-and-play wiring
• Compatible with common libraries and RF encoders/decoders (e.g., VirtualWire, RadioHead)
• Includes antenna connector or mounting point for improved range

Specifications (Typical)

• Frequency: 433.92 MHz (ISM band)
• Modulation: ASK / OOK
• Operating Voltage: 5V (some variants work at 3.3V; check specific module)
• Transmitter Pins: VCC, DATA, GND
• Receiver Pins: VCC, DATA, GND (plus ANT on some modules)
• Typical Range: 30–200 meters line-of-sight (environment & antenna dependent)
• Current Consumption: Low (transmitter TX bursts; receiver idle)
• Dimensions: Small PCB modules ideal for breadboard use

Applications

• Remote control systems (garage doors, relays, switches)
• Wireless sensor networks and telemetry
• Home automation (wireless switches, alarms)
• DIY wireless remotes and data logging
• Prototyping RF-based projects with Arduino or Raspberry Pi

Why Choose This RF Pair

Affordable and easy to use, this 433MHz transmitter/receiver pair is perfect for makers and engineers who need a simple wireless link without the complexity of Wi-Fi or Bluetooth. It’s lightweight, requires minimal wiring, and works well for many low-data-rate IoT and remote-control applications — especially when paired with a decent antenna and good signal encoding.