Compared with infrared remote controller, wired controller can be fixed on the wall and avoid 
mislaying. It's mainly used for commercial zone and makes air conditioner control more 
convenient. 
 
2.3.1.6 Build-in Drain Pump 
  The drain pump can lift the condensing water up to 750mm upmost.   
  It’s convenient to install drainage piping under most space condition. 
 
2.3.1.7Terminals For Alarm Lamp and Long-distance On-off Controller Connection Are 
Standard 
  Reserve terminals for the connection of alarm lamp and long-distance on-off controller, more 
human control.