Elecrow
315M RF Controller Kit
A simple 315MHz wireless controller kit consisting of a 4-button RF keyfob remote and a matching receiver module. No programming or microcontroller is requir...
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A simple 315MHz wireless controller kit consisting of a 4-button RF keyfob remote and a matching receiver module. No programming or microcontroller is required — power the receiver with 5V DC and press a button on the keyfob to activate the corresponding output pin.
Uses SC2273-L4 and SC2272-M4 encoder/decoder chips with AM (amplitude modulation). When a button is pressed, the corresponding receiver output goes HIGH; when released, it returns to LOW (momentary operation).
Key Features
- No Programming Required – Simple one-to-one link between keyfob and receiver
- 4 Independent Channels – Buttons A, B, C, D each activate a separate output pin
- Momentary Output – Output is HIGH while pressed, LOW when released
- 315MHz AM Modulation – SC2273/SC2272 encoder-decoder pair
Specifications
- Frequency – 315MHz
- Modulation – AM (amplitude modulation)
- Receiver Voltage – 5V DC
- Keyfob Battery – 12V DC
- Standby Current – 4.5mA
- Operating Temperature – -10°C to +70°C
Ideal For
- Simple wireless remote control projects
- Triggering relays, motors, or LEDs wirelessly
- Prototyping wireless control without programming
Package Contents
- 1× 4-Button RF Keyfob Remote (315MHz)
- 1× RF M4 Receiver Module
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.
- encoder
- An encoder is a sensor that converts the rotation or position of a shaft, knob or dial into electrical signals, reporting movement as incremental steps and direction, or as an absolute position. It is used to track how far something has turned, which matters for precise positioning, speed control, repeatable movement, or using a rotary knob as an input.
- 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.
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