Although there is no tester, it was working without any problems right before removal. It has been used for about 2 years, so there is a feeling of use such as rust. Since it was only installed once, there are still many wires remaining. There are screws and sponges, but the original box has been thrown away. It will be placed in an alternative case, carefully packed, and sent. Immediate purchase is okay. I will not offer discounts during the first few days of sales, nor will I respond to extreme price reductions. No returns or refunds, please.