We don’t know much more about this than that it does not light up when A/C power is applied. Sold as is, untested.

50/200 KHZ Unit, only 2 of the 4 slots have sounder card in them.

Thanks for looking!

All items sold at Max Marine Electronics come as you see in the pictures provided, with ONLY the parts and accessories shown in the pictures, PLEASE do not assume any additional items will be included in your shipment. IF YOU DO NOT SEE SOMETHING YOU EXPECT TO BE INCLUDED IN THE PICTURES WE PROVIDE, IT WILL NOT BE INCLUDED. Please read all descriptions thoroughly, as there are times a display is used ONLY to show the item being sold is functional, working properly and these displays ARE NOT included and this will be stated in our descriptions. If you have ANY questions please always feel free to send an eBay message or call Max Marine Electronics Inc, Pompano Beach, Florida for help, assistance or more detailed information. We always want to be transparent with our customers and fully disclose any information regarding the products we sell.