Elecrow
4 Channels RF Remote Control Module DC 5V
This Elecrow 4-channel RF remote control module pairs a 433MHz wireless receiver board with a 5-button RF remote controller. Each of the four latching relays...
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This Elecrow 4-channel RF remote control module pairs a 433MHz wireless receiver board with a 5-button RF remote controller. Each of the four latching relays provides passive (dry contact) output, allowing you to switch mains-powered appliances or DC loads up to 10A without additional circuitry. The module can also be controlled directly by a microcontroller via its standard interface.
The self-locking (latching) mode means each relay toggles on and off with successive button presses. LED indicators (D1–D4) show the status of each relay channel, plus a power LED (D5). The included remote provides a range of 15–30 metres.
Key Features
- 4 Latching Relay Channels – Self-locking mode with passive (dry contact) output
- 433MHz RF Wireless – 15–30 metre remote control range
- High-Current Relays – Rated up to 10A at 250VAC or 10A at 30VDC
- Microcontroller Compatible – Standard interface for direct MCU control
- LED Status Indicators – D1–D4 for relay status, D5 for power
- 5-Button Remote Included – Individual channel control plus all-off
Specifications
- Working Voltage – 5–5.5V DC
- Working Current – ~220mA
- Quiescent Current – ~6mA
- Max Load – 10A at 250VAC / 10A at 30VDC
- RF Frequency – 433MHz
- Remote Range – 15–30 metres
- Relay Mode – Self-locking (latching)
- Module Dimensions – 65 × 50 × 20mm
Package Contents
- 1× 4-Channel RF Receiver Module
- 1× 5-Button RF Wireless Remote Controller
Jargon buster
Plain-language definitions for the technical terms used above.
- DC
- DC means direct current, where electricity flows in one constant direction, as supplied by batteries, USB ports and many plug-pack power supplies. When a product specifies DC, it runs from a DC supply rather than mains AC, so you need to provide the correct voltage and polarity.
- LED
- A light-emitting diode (LED) is a small electronic component that emits light when current flows through it in the correct direction. Because it only conducts one way, its polarity matters, and a through-hole LED must be soldered the correct way around to light up.
- microcontroller
- A microcontroller is a small computer on a single chip that runs a stored program and controls connected inputs and outputs such as buttons, sensors, displays and communication interfaces. In a device built around one, it is the part that executes the code and coordinates the device's behaviour.
- RF
- RF means radio frequency, referring to signals used for wireless communication and other high-frequency electronics. A low-noise, stable power supply is important for RF circuits because power noise can affect signal quality and measurements.
Warning
This module can switch mains voltage loads. Ensure all high-voltage system design and wiring is performed by a qualified electrician and complies with local electrical regulations.
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