With IPHost Network Monitor you can run simple snmp requests against a Dell device in your network.
swSensorInfo
Switch Sensor Info
1.3.6.1.4.1.1588.2.1.1.1.1.22.1.5
In V1.6, it contains the sensor type and number in textual format. For example, 'Temp 3', 'Fan 6'.
Back to SW-MIB MIB page.
IPHost Network monitor allows you to monitor swSensorInfo on Dell device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Dell WiFi routers right now.