A simple 433 MHz RF link kit consisting of a transmitter and receiver pair, commonly used for basic wireless remote control and data transmission between microcontrollers. The ASK (Amplitude Shift Keying) modulation makes these modules easy to use with popular Arduino libraries such as VirtualWire or RadioHead.

The transmitter accepts a wide input voltage range (3–12V), with higher voltage delivering greater transmission power and range. The receiver outputs digital high/low signals that can be read directly by a microcontroller.

Key Features

• 433 MHz ISM Band – Licence-free frequency for short-range wireless communication
• ASK Modulation – Simple amplitude shift keying, compatible with VirtualWire and RadioHead libraries
• Wide TX Voltage Range – 3–12V input; higher voltage increases transmission range
• TX + RX Pair Included – Both transmitter and receiver modules in one kit
• Simple Interface – Single data pin on each module connects directly to a microcontroller GPIO

Specifications

• Frequency: 433 MHz
• Modulation: ASK
• Transmitter Input Voltage: 3–12V DC
• Receiver Data Output: High ~½ Vcc, Low ~0.7V

Ideal For

• Basic wireless remote control projects
• Arduino and microcontroller wireless data links
• Simple sensor data transmission
• Learning about RF communication

Package Contents

• 1× 433 MHz RF Transmitter Module
• 1× 433 MHz RF Receiver Module