UK Amazon... just have a look at the "About this Item" section... There's never been a case in history with a more credible returned as Not As Described! - Ever! lol :
Goodtime Banjo Resonator Retro Fit Kit – Deering® Banjo Company
Relay Switch Module, 433.92MHz Saw Resonator 12V Remote Transmitter 4 Channel Rolling Code for Industrial Devices for Home Lighting : Amazon.ca: Tools & Home Improvement