Just sold my Symphony unit on eBay and just realised it needs a radio code to be used. Is the code 4 digits long?

I've found a sticker on the inside of the manual with a four digit code along with (what im guessing is) the model number or something. Is there any way to test the code to make sure it is the right one?

Just sold my Symphony unit on eBay and just realised it needs a radio code to be used. Is the code 4 digits long?

I've found a sticker on the inside of the manual with a four digit code along with (what im guessing is) the model number or something. Is there any way to test the code to make sure it is the right one?

Codes are pretty much always 4 digits! The sticker is probably the code printed sticker from production.