Description
πΉ 433 MHz RF Wireless Transmitter & Receiver Module Set β Stable Signal Link
Bridge the communication gap in your electronic projects with this reliable 433MHz RF wireless pair. Whether you are building a weather station, a smart home security system, or a simple remote control device, this low-profile transmitter and receiver combination offers a stable, interference-resistant link for short-to-medium-range data transmission.
Compatible with Arduino, Raspberry Pi, ESP8266, and standalone digital circuits, this kit allows for seamless integration into your custom designs.
β Key Features
- Reliable ASK/OOK Modulation: Utilizes standard Amplitude Shift Keying technology to filter out noise and ensure clean signal transmission even in electrically noisy environments.
- Low Profile Design: Small footprint fits easily inside tight control boxes, handheld remotes, and portable sensor devices.
- Wide Operating Voltage: Flexible input range makes it easy to interface with various logic levels (3.3V – 5V microcontrollers).
- Long Battery Life: Ultra-low standby current ensures batteries last longer in battery-operated sensors or alarm systems.
- External Antenna Ready: Equipped with a solder pad or connection point for a wire antenna to maximize transmission distance.
π Technical Specifications
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Feature
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Specification
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Operating Frequency
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433.92 MHz (ISM Band)
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Modulation Type
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ASK (On-Off Keying)
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Working Voltage
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3.5V β 12V (TX) / 5V (RX)
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Transmission Current
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<10mA (Active)
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Standby Current
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~3ΞΌA (Ultra-Low Power)
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Effective Distance
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Up to 20β50 meters (Open field, with antenna)
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Data Rate
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Up to 4 Kbps
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Dimensions
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30mm Γ 14mm Γ 5mm
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π οΈ Common Applications
- Home Automation: Controlling lights, sockets, and fans via wireless apps.
- Telemetry Systems: Sending temperature/humidity data from remote outdoor sensors to a central hub.
- Security: Wireless gate openers and burglar alarm transmitters.
- Education: Perfect starter kit for learning RF communication, coding, and IoT concepts.
β‘ Wiring & Setup Tips
- Antenna Optimization: For best performance, attach a straight wire approx 17cm (6.7 inches) long to the ANT pin. This acts as a quarter-wave antenna tuned specifically to 433MHz.
- Logic Level Matching: Ensure your microcontroller (e.g., Arduino Uno) provides enough voltage. Some USB-powered ports may provide slightly less than 5V, which could affect output strength on older models.
- Interference: While robust, keep the receiver away from high-voltage lines to prevent false triggering.
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