Last television using ultra sonic remote

[Jon A.]

I have a Zenith System 3 ultrasonic remote in black with a button that toggles the on-screen channel/time indicator, but there's no RAT keypad. That's likely the newest Zenith ultrasonic remote I have. I have three others in the same form factor, one with a zoom button, two of them are dark brown, one is gray.

I was speaking with someone who said she once had a cable box that would change channels when a door was slammed or the guy upstairs would stomp his foot. She thought there was something wrong with it and dumped it. Now she knows that wasn't the case.