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