The VT485M is a plug-and-play Modbus RTU expansion board designed for integrating Modbus devices with Vutlan monitoring units.It supports connecting and monitoring up to 31 Modbus RTU devices, with individual measured values ​​displayed as virtual sensors in the Vutlan web interface.The board uses an RS485 interface via a 3-pin (B-, A+, GND) connector with a 3.5 mm pitch.The board has an internal terminator, enabled by default.