...and what else?.....LOL...see previous post...go figure:

https://www.google.com/search?q=RF04FAU&source=lnms&tbm=isch&sa=X&ved=2ahUKEwihgv7Wwb_oAhUNHMAKHX_UAu4Q_AUoA3oECAsQBQ&biw=1366&bih=599