What type of plug used on Halloween props!

Hi all,
With Halloween just around the corner,
With the animated props, (kmart, bigw)
I was wondering if anyone knows what plug type they use for the 'test' button,
As i wish to use external buttons, while not interfering with the way the prop is built.

i thought it might be a 2p jst plug, but hoping someone knows for sure.

Thanks in advance
Alec

Got a photo of the plug/socket combination? Some might recognise it....

May depend on the age of the prop, and who made it, i'm not sure if they have a universal connection

I haven't seen this years, but previous years did use a basic 2pin plug