I was looking into the same challenge recently. There's the Phihong POE370U which offers a network interface for managemengt (web interface) and snmp monitoring.
But looking at the pricing, a decent PoE switch might come in cheaper.
MTCNA, MTCUME, MTCWE
There are 10 types of people: Those who understand binary and those who don't.
There are two types of people: Those who can extrapolate from incomplete data