Elecrow
1 Channel RF Remote Control Module DC 5V
A single-channel latching relay module with a 433 MHz RF wireless remote control, powered by DC 5 V. The relay can be toggled via the included two-button wir...
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A single-channel latching relay module with a 433 MHz RF wireless remote control, powered by DC 5 V. The relay can be toggled via the included two-button wireless controller at distances up to 30 metres, and can also be controlled directly by a microcontroller via the standard interface.
The module features a passive relay output with self-locking mode, dual LED indicators (power and relay status), and can switch loads up to 10 A at 250 VAC or 10 A at 30 VDC.
Key Features
- Channels – 1
- Operating Voltage – DC 5–5.5 V
- Working Current – ~70 mA (quiescent ~6 mA)
- Max Load – 10 A at 250 VAC or 10 A at 30 VDC
- RF Frequency – 433 MHz wireless receiving
- Remote Control Range – 15–30 metres
- Work Mode – Self-locking (latching)
- LEDs – Power (LED1) and relay status (LED2)
- Module Dimensions – 48 × 35 × 20 mm
Ideal For
- Wireless control of lights, fans, motors, and other devices
- Microcontroller-based automation projects
- Situations requiring wireless relay switching with DC power
Package Contents
- 1× Single-channel RF relay receiver module (DC 5 V)
- 1× Two-button 433 MHz wireless remote control
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.
- Relay module
- A relay module uses an electrically controlled switch to let a low-power microcontroller control a separate circuit. It matters when switching devices that need different voltages or more current than a microcontroller pin can safely handle.
- 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.
- VAC
- Volts AC, a way of specifying voltage for alternating-current mains power rather than direct-current electronics power. When a power supply lists an input such as 100–240 VAC, it indicates the range of wall-power voltages it can accept.
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