4 Channel Wireless Four-Button RF Remote Control Transceiver Module

Product Description The 4-Channel Wireless RF Remote Control Transceiver Module is a complete "plug-and-play" solution for wireless switching and remote automation. This kit includes a handheld four-button keychain transmitter and a matching super-regenerative receiver module. Based on the popular PT2262/PT2272 encoding scheme, the system provides four independent digital outputs that correspond to the four buttons on the remote. Unlike raw RF modules, this pair handles all encoding and decoding internally, outputting a clean 5V high signal whenever a button is pressed. It is ideal for wireless garage door openers, remote-controlled robots, home automation lighting, and security alarm triggers.

Key Features

• Instant Wireless Control: Four dedicated channels allow you to control up to four independent devices or logic inputs simultaneously.

• High-Security Fixed Coding: Uses a hardware-encoded signal to prevent interference from other nearby RF devices.

• Handheld Keychain Remote: Includes a rugged, metallic-trimmed 4-button remote with a sliding cover to prevent accidental button presses.

• Direct Microcontroller Interface: The receiver pins output a stable 5V TTL signal, making it directly compatible with Arduino, Raspberry Pi, and PIC microcontrollers.

• Status Indicator LED: The receiver module features an on-board LED that flashes when a valid RF signal is detected, simplifying the debugging process.

Technical Details

• Decoding Architecture: Employs the PT2272-M4 (Momentary) or L4 (Latched) IC, which decodes the encrypted RF pulse stream into digital high/low states.

• Antenna Requirement: For maximum range, a 17cm wire antenna should be soldered to the "ANT" pad on the receiver module.

• Pin Configuration: Features 7 pins: VT (Valid Transmission), D0, D1, D2, D3, VCC, and GND.

• VT (Valid Transmission) Pin: This pin goes HIGH whenever any of the four buttons are pressed, acting as a master interrupt signal.

• Operating Principle: When a button is pressed on the remote, it sends a 433MHz modulated signal; the receiver picks this up, decodes the address, and sets the corresponding data pin (D0-D3) to HIGH.

• Modulation Type: Amplitude Shift Keying (ASK) ensures reliable transmission through walls and light obstacles.

• Receiver Sensitivity: Rated at -105dBm, allowing it to pick up weak signals from distances up to 100 meters in open-air conditions.

• Low Standby Power: The receiver circuit is optimized for low current draw (approx. 4.5mA), making it suitable for long-term monitoring.

• Transmission Speed: Fast response time (milliseconds) ensures no lag between the button press and device activation.

• Address Coding: Features 8-bit address pads on the back of the PCB which can be soldered to match specific remotes for personalized security.

• Logic Level: Outputs standard 5V logic; for 3.3V systems (like ESP32), a simple voltage divider or logic level shifter is recommended.

• Oscillation Resistor: Standardized to work with most universal 433MHz fixed-code remotes.

• PCB Build: Compact FR-4 design with high-frequency components shielded against minor electromagnetic noise.

• Working Temperature: Stable operation from -20°C to +70°C.

• Versatile Mounting: Small receiver footprint allows it to be tucked inside small project boxes or behind wall switches.