Garage Door Control Button

[Michael15956]

I was wondering if a lighted garage door control button has two sets of contacts. One for normally closed for the light and one normally opened for the motor?

 

[stickboy1375]

Are you asking if you need a certain # of conductors at the button?

 

[480sparky]

They're digital. Look at the back and you'll see a PC board. Every one I've ever seen only needs two wires.

 

[Michael15956]

Are you asking if you need a certain # of conductors at the button?

No, just wondering how the light is always on and how the contacts close to open or close the door.

 

[Michael15956]

They're digital. Look at the back and you'll see a PC board. Every one I've ever seen only needs two wires.

Thanks Ken, that helps. Does the one single button ones have a PC board also?

 

[480sparky]

Thanks Ken, that helps. Does the one single button ones have a PC board also?

Not that I'm aware of. The electronics in the operator determine what needs to be done (raise, lower or reverse) when you push it. I think I've installed doorbell buttons in addition to the 3-button jobs that come with the operator.

 

[dezwitinc]

If you use a doorbell button with a light, you may have problems.
I remember one several years ago that caused the door to go up and down.
Unlighted button solved the problem.

 

[LarryFine]

I was wondering if a lighted garage door control button has two sets of contacts. One for normally closed for the light and one normally opened for the motor?

Simply enough, they just place a light across the contacts, like a lighted doorbell button. The current of the light flows through the load, but is low enough to not trigger the electronics. An LED uses much less current than an incandescent bulb.

 

[Michael15956]

Simply enough, they just place a light across the contacts, like a lighted doorbell button. The current of the light flows through the load, but is low enough to not trigger the electronics. An LED uses much less current than an incandescent bulb.

Thanks Larry,

I took an Ohm reading across a one button garage door opener and received a low resistance reading when the contacts were opened and closed. Would that be because of the light load across the contacts? The button did not appear to have any electronics at all.

 

[Dennis Alwon]

Thanks Larry,

I took an Ohm reading across a one button garage door opener and received a low resistance reading when the contacts were opened and closed. Would that be because of the light load across the contacts? The button did not appear to have any electronics at all.

That is correct. The light will give you an ohm reading otherwise it is just a momentary contact switch. I also have had a problem with the lighted button many years ago. I just pulled out the ligh and the switch worked fine. Some units insist they must have a special switch, probably to control the light on the door separately--- not sure

 

[LarryFine]

A triumvirate of murine rodents totally devoid of ophthalmic activity was observed in a state of rapid locomotion in pursuit of an agriculturalist?s uxorial adjunct.

Three Blind Mice?

 

[henrylee]

Larry Fine

Larry Fine

Larry, I'm trying to elicit another response from you to my confusion over 130vdc and the division of same in the field. 130vdc at the battery bank is obvious, but the division when testing in the field to 65vdc is still confusing. Considering there is no center tap on the battery bank. Thanks, Lee