8-ch digital input with 1-port RS-485 for Modbus devices_x000D_ 2.4GHz Wi-Fi reducing the wiring cost during big data acquisition_x000D_ Easily extend the existing network by adding APs, and share existing Ethernet software_x000D_ Configured by mobile devices directly without installing any software or Apps_x000D_ Zero data loss using the log function with RTC time stamp_x000D_ Data can be automatically pushed to Dropbox or computer_x000D_ Supports RESTful web API in JSON format for IoT integration