This is a clone of the ATTEN 858D+.
NOTE: These stations have a 'cool down' function that keeps the fan running until the head is below 100°C to protect the elements even when back in it's holder.
It will turn off automatically after a short amount of time.
https://learn.sparkfun.com/tutorials/how-to-use-a-hot-air-rework-station/all
hot_air_gun_858_series_.pdf
Atten AT858D+ Hot air station