PowerShield Communication cards allow control and monitoring of multiple UPSs through Simple Network Management Protocol (SNMP) over LAN network or internet connection. When local UPS communications beyond the standard USB or RS232 are required, dry contact relay cards are available. The PowerShield SNMP V4 has increased levels of security and supports virtual machine environments such as VMware and Hyper-V. It offers Modbus TCP/IP support. Features: Real-time dynamic graphs of UPS data (voltage, frequency, load level, battery level) Warning notifications via audible alarm, broadcast, mobile messenger, e-mail and SNMP trapsHistoric data log stored in centralized PC database Simple firmware upgrade with one click Password security protection and remote access managementSupports optional environmental monitoring detector for temperature, humidity and smoke in external SNMP card.