DFRobot
Gravity: Digital Wireless Transmit Switch (433MHz)
A simple 433 MHz RF wireless switch set that transmits digital signals between a transmitter and receiver module. Based on Gravity interface connectors, it w...
A simple 433 MHz RF wireless switch set that transmits digital signals between a transmitter and receiver module. Based on Gravity interface connectors, it works with any microcontroller that can read and write digital signals — no complex AT commands or pairing protocols required.
The transmitter supports 15 button states, and the receiver offers multiple working modes including inching, latching, self-locking, and interlocking. The system supports one-to-many and many-to-one configurations with a pairing function on the receiver.
Key Features
- 433 MHz RF Communication – Strong wall penetration, no Wi-Fi or Bluetooth required
- 15 Button States – Multiple control signals from a single transmitter
- Pairing Function – Receiver supports one-to-many and many-to-one setups
- Multiple Modes – Inching, latching, self-locking, and interlocking
- Ultra-Low Standby Power – Transmitter standby current less than 10 µA at 5 V
- Working Voltage – 3.3 V to 5.0 V DC
- Indoor Range – Approximately 15 metres
Specifications
- Transmitter Current – 10 mA active, <10 µA standby (at 5 V)
- Receiver Current – 6 mA active, 3 mA standby (at 5 V)
- Frequency – 433 MHz
- Interface – Digital (Gravity connector)
- Transmitter Size – 47 × 32 mm
- Receiver Size – 37 × 32 mm
Ideal For
- Remote control projects
- Wireless doorbells
- Upgrading wired buttons to wireless
- Wireless signal transmission between devices
Package Contents
- 1× Gravity Digital Wireless Switch (transmitter and receiver)
- 1× Gravity Digital Sensor Cable
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- Gravity
- Gravity is DFRobot’s plug-in connector system for sensors, motors and modules, using standard cables to reduce loose jumper wiring. It matters because Gravity-compatible parts can connect directly to these ports, while non-Gravity parts may need adapters or manual wiring.
- microcontroller
- A microcontroller is a small computer on a chip that runs your program and controls connected inputs and outputs. For this product, it is the part that reads buttons and sensors, drives the display and speaker, and communicates over Bluetooth.
- 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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Supplier page — dfrobot.com
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