Bang & Olufsen A9 Keyring

Add to existing Bang & Olufsen products in your home with the A9 keyring, which will turn on the radio, TV, or lights when you come inside–plus turn it all off when you exit. It’s a great way to save energy and help remember to turn off electronics before leaving.

The stainless steel keyring functions with a one-touch button and is a lightweight addition to current keys.

$95 @ Amazon