1、The default baud rate is 9600BPS, you can configure to support 1200 2400 4800 19200 baud rate. 2、Supports two states, the input port state supports query (default) and automatic reporting. 3、The level input mode has two modes of high level and low level input, and the input port supports TTL (5V) LvTTL and compatible level. 4、RTU module provides great convenience for your use. In the command mode, it can support up to 247 devices in parallel. 5、The module is made of ABS material, which has the characteristics of corrosion resistance, high strength, and good toughness. Item Type: RTU Module Material: ABS Working Current: 8-12MA MODBUS RTU 03 06: Command Control Mode There Are Two Input Modes: Low Level Input (default) and High Level Input The Input Port: Supports TTL (5v) LvTTL and Compatible Level 1 x RTU Module