This is a universal air conditioner remote control suitable for most Daikin air conditioner ACs. The remote control has a memory function. Most models use it directly by default. If not, then it just requires simple setup. Works directly with most Daikin models without programming. But if it still doesn't work, just follow the steps below to reset: 1. Press and hold the "ON/OFF" button to start automatic search for 5 seconds. 2. Release the "ON/OFF" button until the AC turns on or off. 3. When AC receives the signal, press the "ON/OFF" key to save. If only a few buttons work after setting it up, try setting it up again. Can only be displayed in Celsius and cannot be changed to Fahrenheit. Compatible remote models: ARC433A1 ARC433A17 ARC433A27 ARC433A46 ARC433A75 ARC433A83 ARC433A87 ARC433B47 ARC433B69 ARC433B70 ARC433B71, etc. Packing list: 1 air conditioner remote control (batteries and instructions not included)