H Series Optional with 4G module and WIFI module 3 Ethernet ports (standard) Serial passthrough and WVPN passthrough supported Maximum real-time monitoring points is 600 Maximum alarm data monitoring points is 300 Maximum historical data monitoring points is 100 Maximum days to save historical data is 180 days Maximum historical data saved is 1 million READ MORE E Series Optional 4G module Edge computing and serial passthrough supported Support data transmission with network failure Maximum real-time monitoring points is 250 Maximum alarm data monitoring points is 100 Maximum historical data monitoring points is 50 Maximum days to save historical Ante in on day READ MORE RE /RH Series Website information is being update READ MORE