With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
swPoESystemInfoPowerRemained
Switch PoE System Info Power Remained
1.3.6.1.4.1.171.12.24.2.1.1.3
The actual momentary remaining power (in watts) in the PoE system.
Back to PoE-MIB MIB page.
IPHost Network monitor allows you to monitor swPoESystemInfoPowerRemained 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.