From a Signal Pin to a Real Device

Project Ideas
1

Short answer first

An LED or Arduino input can connect to RX480E OUT directly.

A relay, lamp, motor, lock, or pump cannot connect to RX480E OUT directly.

Why? RX480E OUT is a signal pin. It is not a power output.

What this post adds

The model guide explains how the remote signal gets into RX480E:

Which RX480E Model Should I Choose?

This post explains the next part: after RX480E receives the signal, how does a real device turn on?

To answer that, keep two paths separate.

Two paths: signal and power

A real control project has two paths:

  1. Signal path: remote → RX480E OUT → driver input
  2. Power path: power supply → driver / relay → real device

RX480E belongs to the signal path. It tells another part that the remote button was pressed.

RX480E does not belong to the power path. It does not feed power to a motor, lock, pump, lamp, or relay coil.

That is the main idea.

Why this matters

RX480E OUT is a small signal pin, roughly 5–20 mA.

That is enough for:

  • an LED test;
  • an Arduino / MCU input.

It is not enough for:

  • a relay coil;
  • a lamp;
  • a DC motor;
  • a solenoid lock;
  • a water pump.

These parts need more current. Some need hundreds of mA. Some need amps.

So the job of RX480E OUT is simple: send a signal to a driver. The driver handles the power.

Quick decision table

What you want to connect Can RX480E OUT connect directly? What to do
LED test Yes Connect to RX480E OUT for a simple test
Arduino / MCU input Yes Connect RX480E OUT to the input pin
Relay module with driver circuit Usually yes Connect RX480E OUT to the module signal input
Bare relay coil No Use an NPN transistor driver and a flyback diode
Lamp, motor, lock, pump No Use a relay / driver path and a separate power supply

:warning: Safety first

Do not start with mains power.

Mains power means power from a wall outlet, such as 110 V AC or 220 V AC. It can hurt or kill you.

If you are new to this, start with a 5 V DC test load.

Also do not connect a relay coil, lamp, motor, lock, or pump directly to RX480E OUT. The pin cannot supply enough current, and the voltage spike from a coil can damage the module.

More project posts coming

We will keep posting real project examples in this section — step by step wiring, signal path, and power path for common setups.

If your project cannot wait, post it below.

Bring your own project

If your project is not listed, post it here. Use this simple format:

  • What do you want to control? (LED, relay, lamp, motor, lock, pump, Arduino)
  • What powers that device? (5 V DC, 12 V DC, wall outlet / mains power, or something else)
  • Where do you plan to connect RX480E OUT?
  • Are you using a relay module, or a bare relay coil?
  • What have you tested so far?

You do not need to know every answer. Post what you have, and we will help you check the signal path and the power path.

Before you build — four questions

Step Question
1 Is RX480E OUT sending a signal, or trying to power a device?
2 Does your device need its own power supply?
3 If you use a relay, is it a relay module or a bare relay coil?
4 Have you tested RX480E OUT with an LED first?

If you can separate the signal path from the power path, your project is much easier to build and much easier to fix.