With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
swDlinkEquipmentFan2Status
Switch Dlink Equipment Fan2 Status
1.3.6.1.4.1.171.12.11.1.5.2
Indicates status of the second fan
Back to DLINK-EQUIPMENT-MIB MIB page.
IPHost Network monitor allows you to monitor swDlinkEquipmentFan2Status on D-Link device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring D-Link WiFi routers right now.