The Genuine Petsafe Radio Systems AC Wall Adapter Power Supply NF5V-1C-DC 650-249-1 is a reliable and compatible power supply specifically designed for Petsafe products. As a transformer/flyback type adapter, it ensures efficient power conversion for your devices, providing a stable and consistent electrical output. With the Petsafe brand guarantee, you can trust that this power supply will meet the needs of your electronic equipment reliably. this is a new old stock. Still has protective film on the sides and as you can see from the pictures of the plug, there’s no signs of it being plugged in and out of wall sockets.