Features: 1) Remote control distance: 10 meters 2) Battery works more than 2 years 3) The fan works quickly and fast 4) Protection: restart after stopping 5 minutes, circuit short protection 5) Clean ice in the outdoor unit, if found out the ice, work 5 minutes one time 6) Clean the water in the indoor unit, that is a type from indoor to outside 7) OEM and SKD orders are welcome