Features 1、Using standard Modbus‑RTU protocol, it can be directly adapted to PLC, DCS and various domestic configuration software. 2、RS485 communication signal output interface adopts double protection of overvoltage and overcurrent. 3、Input signal type and communication format can be set by the host computer software, and the power polarity is protected against reverse connection. 4、4‑channel analog converter, can input 2 channels 0‑20mA, 4‑20mA, 2 channels 0‑5V, 0‑10V four kinds of analog input signals, input analog signal data, and output through isolated RS485 interface. 5、Signal input and the RS485 communication electrical signal are isolated from each other, effectively suppressing various serial mode and common mode interference, ensuring the accuracy of the data, and also ensuring the reliable operation of the module. Specification Item Type: Data Acquisition Module Material: Resin Model: WDAM485 Electrical Parameters: Signal Input 1. Input Signal: 4 Analog Inputs 2. Input Signal Type: 0-20mA, 4-20mA, 0-5V, 0-10V Four Analog Signals 3. Sampling Rate: 4 Channels Are Collected Once Every 1mS 4. Resolution: 12-Bit AD 5. Accuracy: Voltage 0.5%, Current 0.5% 6. Isolation Voltage Protection: 1500V RS485​Communication Output 1. Communication Protocol: MODBUS-RTU 2. Interface Type: Isolated RS485 Communication, the Output Interface Adopts Double Protection of Overvoltage and Overcurrent 3. Baud Rate: 4800, 9600, 19200, 38400, 57600 the Default Is 9600 4. Check Digit: No Check 5. Setting Method: Module Address Can Be Set by Software 6. Isolated Voltage Protection: 1500V Module Size Approx. 88 x 55 x 44mm / 3.5 x 2.2 x 1.7in Installation Method 35 Standard Card Rail Type Working Environment Temperature: -10℃+55℃ Humidity: 35-85% (Non-Condensing) Power Supply 1. Power Supply: 10v-30v Wide Range Power Supply, Power Supply Anti-Reverse Protection 2. Power Consumption: Less than 1W Purpose: Convert Analog Quantity to Digital Quantity Package List 1 x Converter