Gravity: Active Isolated RS485 to UART Signal Adapter Module

The Gravity: Active Isolated RS485 to UART Signal Adapter Module enables microcontrollers to interface safely and reliably with RS485 industrial devices. Featuring built-in power isolation and transient voltage protection, it suits students, makers, and engineers developing robust control systems or sensor networks. It is compatible with standard 3.3V and 5V controllers and supports data rates up to 1 Mbps.

Microcontroller connection and compatibility

The module easily connects to Arduino boards and other mainstream controllers via standard UART serial communication. It operates across a supply voltage range of 3.3V to 5V while maintaining stable data transfer at baud rates up to 1 Mbps.

Industrial sensor data acquisition

This adapter provides a secure link to read data from industrial sensors, field instrumentation, and control equipment. The active circuitry converts RS485 differential signals to standard UART logic levels for your processing board.

Board overview and power output

The module integrates dedicated power isolation and TVS protection to guard against electrical spikes and noise. It also supplies an isolated power output of up to 12V at 2W (approximately 160mA) for connected peripherals.

High isolation and ESD protection

Built for demanding industrial environments, the module features 3000 VDC isolation voltage and up to 15kV bus electrostatic protection. It also incorporates bus fail protection and bus drive short circuit protection to prevent hardware damage.

High-capacity multi-node networking

With a 1/8 unit load, the adapter can support multi-drop RS485 bus networks of up to 256 nodes. It operates reliably in extreme conditions with a wide operating temperature range from -40°C to +105°C.

Package contents

The package includes one Gravity: Active Isolated RS485 to UART Signal Adapter Module alongside a Gravity 4-pin UART cable for straightforward wiring.

Downloads & documentation

• Product wiki (DFRobot)