Also available separately from Tripp Lite is the Internal SNMP/Web Management Card (Model: SNMPWEBCARD) which makes UPS systems and select switched PDUs fully manageable (monitored and controlled) nodes on a network. In addition, an External Environmental Sensor (Model: ENVIROSENSE available separately from Tripp Lite) and an SNMP/Web card can be used to monitor external temperature, humidity and contact-closure (security and fire-alarm) inputs.