Loosen the two terminal screws on the side of the opener where the bell wire attaches using a screwdriver.
Garage door push button voltage.
Always practice good safety when working on or around your garage door and or your garage door opener.
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.
Ratings 179 270 8 0 garage door part accessory type.
Garage door plug in wireless receiver color sample in white.
Universal garage door opener led light bulb.
Rail extension garage door openers.
Locate the bell wire that connects the wall switch to the garage door opener.
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.
All available were rated 16v max.
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.
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.
Usually 12 volts dc so your 13 volt reading is likely correct.