yep, and if you were an employee you got free service, my old man work for the old "PT&T"(pacific telisis,pac tel,SBC) for 35 yrs got early retirement in 1982. I got all kinds of cool stuff when I was a kid
Yea I know what you mean. We built our home security and nobody knew what the heck it was. Here's a better one. Remember the dummy jack pins that they used to make or break a circuit? Usually white and went into what looked like a head phone jack? The switch had anywhere from 4-10 contacts I think. We wired our car coils through them to ground. When you parked the car you pulled out the pin and took it with you. Thieves looked for toggle switches :>} We never had one stolen that was wired like that.