This is a new, unused item. I bought it for air conditioning, but I'm selling it because I no longer need it. This is a multi-functional kit that allows you to control household appliances from your computer with a remote control, and also control your computer with a remote control. After purchase, please assemble it using a soldering iron. The size is about the size of a Frisk case. Product Name: USB Infrared Remote Control Kit Product Model Number: Kit Version AD00020 / Assembled Version AD00020P Input/Output: Infrared LED / Infrared Light Receiving Module Supported Formats: JEITA/NEC/SONY/Mitsubishi Format Interface: miniB Supported OS: Windows 10 / 8.1 / 8 / 7 / Vista / XP Size: W67 x D27 x H8mm Package Contents: Kit parts / Manual *USB cable is sold separately. (Please prepare a USB cable of A:miniB type separately) Separately Required: Soldering iron set / Nipper Since it is unopened, the operation has not been confirmed. Please purchase only if you understand and agree to this.