because most (just to don't say all because I found one) zigbee temperature sensors are wireless, NOT in the sense of wireless communication (obvious, zigbee is a wireless communication protocol), but wired of the sense that the sensor itself is wired to the communication module.
If I need to know the temperature of a water tank, I need to put a wired sensor (ds18b20, RTD, PTxx, etc) inside of the tank (because I can't submerge the temperature module, aka sensor and communication chip, into the tank). That's the advantage of what I called a wired temperature sensor.
And I didn't find any zigbee "wired" temperature sensor since today and I wanted to share this with you, like @zarthan wrote.
There was no question mark at the end of my post, but I assumed (and if not, somebody will deny this) that this kind of sensor should be recognized as a generic zigbee temperature sensor without any custom device written specially for HE.
If you know other zigbee wired temperature sensors, feel free to share, I'm highly interested !
Hope it clarify.