Usually 12 volts dc so your 13 volt reading is likely correct.
Garage door push button voltage.
Loosen the two terminal screws on the side of the opener where the bell wire attaches using a screwdriver.
Universal garage door opener led light bulb.
Ratings 179 270 8 0 garage door part accessory type.
A wall console unit for a garage door opener is not a complicated device so it s fairly simple to troubleshoot when something seems to go wrong.
Always practice good safety when working on or around your garage door and or your garage door opener.
Although the bush button system operates on low voltage always un plug the garage door opener and lock the garage door before starting any repairs or work on with the garage door or the garage door opener.
The electrical rep at the home center said the doorbell and garage button are the same.
Depending on the model most work by connecting two to four wires onto terminals mounting the device on the wall and then plugging the unit into an electrical outlet.
All available were rated 16v max.
The universal remote button kits you speak of are not going to handle the higher voltage associated with the older model opener unless it is powered.
Universal garage door opener interior wall push button.
Garage door plug in wireless receiver color sample in white.