RX480E-1A Module Guide

RX480E-1A Module Guide

Do you need wireless control for one device? Press a remote button, and that one device responds.

RX480E-1A is a 433 MHz wireless receiver module with one signal output pin. It runs on DC 2V–5V. Pair it with a QIACHIP transmitter using an external button. For a first test, wire an LED to the OUT pin and press the remote — that's your first wireless project working. To switch a real load, send the OUT signal to a relay module's input instead.

What RX480E-1A Does

RX480E-1A is a 433 MHz wireless receiver module with one signal output pin. It pairs with a QIACHIP transmitter using an external button, and outputs a high or low signal your LED, relay module, or microcontroller can read.

It sits at one spot in a signal path:

  1. Remote button
  2. 433 MHz signal
  3. RX480E-1A decodes it
  4. OUT pin goes high or low
  5. Your LED, relay module, or MCU reads that signal

The OUT pin is a signal pin, not a power pin. The module's job is to turn "the remote button was pressed" into a digital high or low level that your circuit can use. The power for your real load comes from somewhere else.

One detail worth knowing before you wire anything: pairing on RX480E-1A needs an external button connected to the KEY pin. There is no on-board learning button on this module. This is the visible difference from the four-channel models.

Parameter Value
Input voltage DC 2.0V–5.0V
RF frequency 433.92 MHz
Output 1× OUT pin (signal level)

For every parameter, mode, and wiring diagram, see the full instruction manual.

When to Choose RX480E-1A

Choose RX480E-1A if all of these are true:

  • You only need one output signal.
  • Your circuit runs on DC 2V–5V.
  • You can connect an external button for pairing.
  • Your transmitter uses 433 MHz.

RX480E-1A runs down to 2V, the lowest minimum voltage in the RX480E family. That makes it useful for low-voltage battery projects where a 3V-only module would not start.

If you need four output signals, look at RX480E-4A or RX480E-4C. If your transmitter uses 868 MHz, look at RX480E-868.

What You Can Build

A remote-controlled LED test

This is the first build for every RX480E-1A project.

  1. Power the module with DC 2V–5V.
  2. Connect an external button to the KEY pin.
  3. Pair a QIACHIP transmitter (momentary, toggle, or latching).
  4. Connect an LED to the OUT pin.
  5. Press the remote. The LED responds.

The goal is not the LED — the goal is to prove the signal path works before you connect anything else.

A wireless trigger for a relay module

Once the LED test works, the OUT pin can trigger a relay module (not a bare relay coil).

Signal path:

  1. Remote button
  2. RX480E-1A OUT pin
  3. Relay module signal input
  4. Your real load

The real load — a lamp, a small pump, a fan — gets its power from the relay module's own supply, not from RX480E-1A. RX480E-1A only tells the relay module that the button was pressed.

An MCU input trigger

The OUT pin can also connect straight to an Arduino or ESP32 digital input.

Signal path:

  1. Remote button
  2. RX480E-1A OUT pin
  3. Arduino / ESP32 input pin
  4. Your code decides what happens next

RX480E-1A gives the MCU one clean signal. Everything else — timing, logic, what device turns on — is your code.

⚠ What RX480E-1A Cannot Do

  • The OUT pin is a signal-level output, roughly 5–20 mA. It cannot directly drive a relay coil, a motor, a water pump, a solenoid lock, or a high-current lamp.
  • There is only one output. It cannot control multiple independent channels. For four channels, look at RX480E-4A or RX480E-4C.
  • Pairing requires an external button connected to the KEY pin. There is no on-board learning button.
  • It cannot pair with an 868 MHz transmitter. For 868 MHz, look at RX480E-868.

How RX480E-1A Compares to the Other Models

RX480E-1A RX480E-4 RX480E-4C RX480E-868
Output channels 1 4 4 4
Frequency 433 MHz 433 MHz 433 MHz 868 MHz
Input voltage 2V–5V 3V–5V 3V–5V 5V–24V
Pairing button External KEY pin On-board On-board On-board
Transceiver No No No Yes
Output pins OUT D0–D3 D0–D3 D0–D3

If you need four output channels, look at RX480E-4 or RX480E-4C. The difference between those two is which output pin lights up for button value 8 — D3 on the 4, D0 on the 4C.

If your transmitter uses 868 MHz, or you need a module that can also transmit, look at RX480E-868.

Not sure which one fits? See Which RX480E Model Should I Choose?.

Conclusion

If one wireless channel is all you need, RX480E-1A is the simplest match. Get it here. If you still have questions, leave a reply below.

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