433MHz RF Relay Receiver Module – 1CH Wireless Light Switch
433MHz 1-Channel RF Relay Receiver Module – Wireless Remote Light Switch
Take control of your lighting wirelessly with this compact 433MHz 1-Channel RF Relay Receiver Module. Designed for DIY electronics enthusiasts, home automation projects, and hobbyists, this ultra-small micro module lets you control LED lamp strings, Christmas tree lights, and other DC-powered devices from up to 30–50 metres away in open areas — no wiring overhaul required.
Made in Mainland China.
Key Features
- Wide voltage range: Works with DC 3.6V to DC 24V input and output — compatible with a broad range of setups
- Ultra-low power consumption: Static current of just 3.6 mA–5.5 mA, making it energy-efficient for always-on installations
- High-sensitivity reception: ≥ -107 dBm sensitivity ensures reliable signal pickup even through minor obstructions
- Three working modes: Momentary, Toggle, and Latching — choose the right behaviour for your application
- Easy pairing: Supports 1527 learning code format; pair up to 10 remote controls via the onboard learning button
- Compact size: Just 22.5 mm × 11 mm × 8 mm — fits neatly inside enclosures, light fixtures, or project boxes
- ASK superheterodyne modulation: Delivers stable and interference-resistant wireless communication
- Wide operating temperature: -20°C to 80°C for versatile indoor and outdoor use
Technical Specifications
| Working Voltage | DC 3.6V – DC 24V |
| Maximum Load | 2A |
| Static Current | 3.6 mA – 5.5 mA |
| Working Frequency | 433 MHz |
| Reception Sensitivity | ≥ -107 dBm |
| Modulation Mode | ASK (Superheterodyne) |
| Coding Format | 1527 Learning Code |
| Stored Remote Controls | Up to 10 |
| Working Modes | Momentary / Toggle / Latching |
| Dimensions | 22.5 mm × 11 mm × 8 mm |
| Operating Temperature | -20°C to 80°C |
What's in the Box
- 1× 433MHz 1CH RF Relay Receiver Module
Good to Know
In open areas, the module can typically reach 30–50 metres range (actual distance varies depending on the remote control used). Walls, obstacles, and metal enclosures can reduce range — if you notice shortened distance, try repositioning the module for improved line-of-sight performance.
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Frequently Asked Questions
Q: What devices can I control with this 433MHz RF relay receiver module?
A: This module is ideal for controlling DC-powered devices such as LED lamp strings, Christmas tree light strings, and other low-voltage lighting or switching applications operating within DC 3.6V–24V. It is commonly used in DIY home automation and hobbyist electronics projects.
Q: How do I pair a remote control with this receiver module?
A: The module supports the 1527 learning code format. Simply press the onboard learning button to enter pairing mode, then press the desired button on your 433MHz remote control. The module can store up to 10 different remote controls, making it flexible for multi-user setups.
Q: What is the difference between Momentary, Toggle, and Latching modes?
A: In Momentary mode, the relay is active only while the remote button is held. In Toggle mode, each button press alternates the relay between ON and OFF. In Latching mode, the relay stays in its last state (ON or OFF) until commanded otherwise — ideal for standard light switch behaviour.
Q: What is the wireless range of this receiver module?
A: In open areas with no obstructions, the module typically achieves a range of 30–50 metres. Walls, metal objects, and other physical barriers may reduce this range. Repositioning the module or remote can help maximise wireless performance.