This is a power supply unit that connects to a vehicle battery for parking recording, featuring an off-timer setting and vehicle battery voltage monitoring function. It was used for about 3 months, 5-6 years ago, and has been stored long-term. There is discoloration on the terminals. Since I do not have the necessary environment to confirm operation, the operation has not been confirmed. Manufacturer: Yupiteru Product Name: OP-VMU01 Quantity: 1 Compatible with 12V and 24V vehicles With voltage monitoring function Since the operation has not been confirmed, please consider this only if you understand this.