The LG PWLRVN000 IR Receiver is an accessory device designed to enhance the functionality of your LG air conditioner. It allows you to control your air conditioner remotely using a wireless remote controller. The IR Receiver features a signal detector that receives signals from the remote controller and transmits them to the air conditioner's main PCB Assembly. It also has an emergency operation button that enables you to turn the indoor unit on or off even when the remote controller is not available.