433MHz RF Transmitter & Receiver Wireless Module

The 433MHz RF Transmitter & Receiver Wireless Module is a one-way radio communication pair that sends digital data wirelessly at 433MHz using ASK (Amplitude Shift Keying — a method where signal strength changes carry data). The 433MHz RF Wireless Module transmitter runs on 3V to 12V, while the receiver uses a fixed 5V supply, and together they reach approximately 50 meters in open space. Data moves at up to 4.8 kbps, which is adequate for simple button press commands, sensor flags, and digital bit streams between boards.

The RF Module uses an open antenna design, so adding a 17cm wire antenna to the transmitter immediately extends range. The honest trade-off is that the module has no built-in encoding. Without an encoder-decoder pair, the receiver picks up noise as random data. The rf wireless transmitter receiver module datasheet confirms this — always pair it with encoder and decoder ICs for reliable data.

The 433mhz rf module pinout is straightforward. Students building wireless bells or switches, hobbyists making remote sensors, and makers needing simple one-way data links all use this pair. Connect data pin to a GPIO, pair with an encoder, and test with the Arduino IDE serial monitor. StemVolt stocks this module for fast delivery across India.

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Features:

• 433MHz frequency carrier with ASK modulation sends digital data cleanly over short distances.
• Transmitter voltage range of 3V to 12V accepts batteries and regulated bench supplies alike.
• Receiver fixed at 5V DC outputs a stable HIGH or LOW digital signal on its data pin.
• Data rate up to 4.8 kbps suits button commands, sensor alerts, and short binary streams.

Technical specifications:

Applications:

• Wireless doorbell project uses this RF module to send a press signal across 20 meters.
• 433MHz RF Transmitter & Receiver Wireless Module links two Arduinos for one-way temperature alert transmission outdoors.
• 433mhz rf module pinout connects to a decoder IC to receive reliable remote light switch commands.

Package includes:

• 1 x 433MHz RF Transmitter & Receiver Wireless Module