Overview

The DFRobot Gravity Digital Relay Module is a single-channel relay board designed to let an Arduino or other compatible controller switch higher-power AC or DC loads using a low-voltage digital signal. It is intended for simple on/off control rather than dimming or PWM-based power control.

According to the provided specifications, the module supports TTL-level control and includes a built-in status LED for relay state feedback. Its opto-isolated design and Gravity connector make it easier to integrate into embedded and automation projects without adding an external driver circuit.

Typical uses include switching lamps, solenoid valves, pumps, and other devices that need basic relay-based control. The package list provided includes the relay module, a digital cable, and an acrylic board.

• Single-channel relay module
• TTL digital control input
• Built-in status LED
• Opto-isolated design
• Gravity interface for easy wiring
• Rated for common AC/DC switching applications

Specifications should be verified on the official manufacturer page.