Auto-close in case of fire and raining Optional filter clogging monitor High maintenance convenience

Telca's FCB is specially designed to collaborate with up to 2 air conditioners which already exist in telecom base station shelters, to achieve lowest cooling cost by following controll :

where Tin(Ti) means indoor temperature,To means outdoor temperature,R1 means upper relative humidity limitation for FCB working.

free cooling unit FCB-03D with link interfaces for up to 2 existing AC units