RF 433 MHz Wireless Transmitter and Receiver Pair Module
Add simple, low-cost wireless data communication to your embedded electronics. The RF 433 MHz Wireless Transmitter and Receiver Pair Module is an ultra-compact, budget-friendly hardware solution designed to send and receive digital data wirelessly between two microcontrollers.
Operating on the license-free 433 MHz Radio Frequency (RF) band, this module pair is perfect for projects that require basic telemetry or remote control capabilities without the power overhead, cost, or complexity of Wi-Fi or Bluetooth. It serves as the perfect wireless entry point for students, hobbyists, and industrial engineers building remote sensor networks, wireless alarms, and RC robotics.
Key Features
Perfect Matched Pair: Comes complete with one dedicated transmitter board (FS1000A) and one high-sensitivity receiver board (XY-MK-5V) for seamless out-of-the-box communication.
License-Free 433MHz Spectrum: Operates on the universally accepted Amplitude Shift Keying (ASK) / OOK modulation scheme, providing stable wireless penetration through thin walls and glass obstacles.
Microcontroller Friendly: Connects directly to the digital I/O or UART Tx/Rx pins of any Arduino, ESP32, Raspberry Pi, PIC, or STM32 development board.
Excellent Range Flexibilities: Achieves a transmission range of 20 to 100+ meters (depending on the operating voltage supplied to the transmitter and the attached antenna setup).
Compact Footprint: Miniature board scaling makes it incredibly easy to embed into tight plastic enclosures, compact handheld remotes, or localized sensor casings.
Technical Specifications
Feature | Transmitter Module (FS1000A) | Receiver Module (XY-MK-5V) |
Operating Voltage | 3.5V to 12V DC | 5V DC Nominal |
Operating Current | 4 mA (at 3.5V) | 40 mA (at 12V) | 5.5 mA |
Frequency | 433.92 MHz | 433.92 MHz |
Modulation Mode | ASK / OOK (Amplitude Shift Keying) | ASK / OOK |
Data Transfer Rate | Up to 4 Kbps | Up to 4 Kbps |
Output Power | 10 mW to 40 mW (Voltage dependent) | Digital Output Signal (High/Low) |
Dimensions | 19 mm x 19 mm | 30 mm x 14 mm |
Hardware Wiring & Pin Mapping
Both modules feature an intuitive, minimalist pinout for direct hardware hookup:
1. Transmitter Pinout (FS1000A):
ATAD / DATA (Left Pin): Digital data input pin. Connects to the Transmit (TX) or digital output pin of your microcontroller.
VCC (Middle Pin): Power input rail. Supports 3.5V to 12V DC. (Higher voltage = higher output transmission power and longer range).
GND (Right Pin): System ground reference pin.
2. Receiver Pinout (XY-MK-5V):
VCC: +5V DC stable power supply input.
DATA (Middle two pins): Digital data output pins. Both pins are internally linked; connect either one to your microcontroller’s Receive (RX) or digital interrupt pin.
GND: System ground reference pin.
💡 Hardware Optimization Range Tip: Both modules feature an unpopulated solder pad labeled ANT. For maximum operational distance, solder a 17.3 cm bare copper wire straight to the ANT pads on both boards to act as a highly tuned $1/4$ wavelength whip antenna.
Common Applications
Remote Weather Station Monitoring: Wire the transmitter to an outdoor sensor block to stream real-time temperature and humidity data strings indoors.
Wireless Security Key Fobs: Build custom remote garage door clickers, wireless panic alarms, or shop entrance alerts.
Wireless RC Robots: Send quick directional steering commands from a handheld remote custom-joystick setup down to a motorized robot chassis.
Smart Home Automation: Deploy discrete, low-power remote nodes to trigger mains relays or lighting panels over short-range radio signals.
Package Includes:
1 x 433 MHz Wireless Transmitter Module
1 x 433 MHz Wireless Receiver Module