I need a way to test the voltage without activating the opener upon contact. I hooked one up several years ago and it burned out within seconds. Get shopping advice from experts, friends and the community! The button just closed the circuit when pressed. I marked the indicator with a black marker. Look for the transformer. 1486058771209-1375594145_1486058900659.jpg, https://www.amazon.com/Eaton-7521W-15-Amp-Momentary-Contact/dp/B00PB98W46, VerticalScope Inc., 111 Peter, Suite 901, Toronto, Ontario, M5V 2H1, Canada. I had to buy one that also plugs into an outlet. President Trump lashes out at 'lightweight' reporter, Seymour, 69, clarifies remark on being able to play 25, People can’t believe Trump’s tiny desk isn’t a joke, Americans 'tired of COVID' have experts worried, NFL player's neck injury may end his career, Aniston introduces 'newest member of our family', Sleuths find Utah monolith, but mystery remains, Here are Amazon's best Black Friday deals, The 20 jobs most at risk because of the pandemic, Matthew Perry engaged to 'the greatest woman', Tired of mockery, Austrian village changes name. Might be line voltage you are switching with your doorbell button! Why Does My Hot Water Heater Run Out of Hot Water? Is there a way? It read 43.6 so is that my voltage through the wire? I tried to read each of the two terminals to each other and it opens the door. I think this is the reason my sensors will not light up. Terminal "B" to ground did not trigger the door. Read the specs on the transformer or measure the voltage out of the transformer. I'd replace the switch with a momentary switch often used for disposals. well, if you had to tear apart the sensor for your operator, that should tell you that you need to replace them. The bulb is not important. Opener Chamberlain WD822KDM. my kitchen ceiling light says 60 watts max....i have a bulb that says 120vac 60hz   is this ok? Still have questions? A forum community dedicated to Do it yourself-ers and home improvement enthusiasts. So my issue now would be how do I set my meter to take a reading that will not trigger the opener? Where are you putting your test leads? I tried a standard doorbell momentary switch button rated for 16v. Very helpful thank you. Can you install a new roof in the winter when temps are 25 at night and 35 highest temp in the day. But this will not resolved my button need, in an unpowered area. The reading was successful and did not trigger the door. I have a garage door opener circa 1960s. It works fine. It should be adequate for all of your DIY uses. what you need to do is check your wires for shorts and or open wires. In the garage, open up the door opener. Then buy a non illuminated push button that falls into this voltage range. it should be around 24 volts. That's a really good question. (The door will close only when holding down the button.) Bear in mind I do not know 90% of what my meter does or what many settings mean. Ac not DC. I am fairly certain it is dc, since there is no box in any of the connections, and they used bell wire. It even sparks a bit when pressed. I meant low voltage ac, so I am in agreement. All available were rated 16v max. I'd most likely use a surface mount plastic box. In some rare countries, like Japan, you'll find 50Hz in some locations and 60Hz in others. Why is my house keeping warm without the heater on? I can't imagine it is more than that going through bell wire. Best be careful. Once inside the sensor, hard to say what the electronic board is doing with the voltage once it is fed in. You cannot read the voltage of a switch by reading across the switch. Any button should work as it low voltage … For a better experience, please enable JavaScript in your browser before proceeding. Get your answers by asking now. The rating plate or sticker on the opener should have some reference to the "low voltage" to the sensors. It's precision of display is more precise than its precision of measurement. Oddly, it came back on today when I was hammering nearby. You are saying its higher voltage, what is it ? It reads 13 at the main opener, 13 at the connection to the sensor, but when I opened up the sensor, and checked the board, it only reads 2. I then tried to read from "A" terminal to ground and it triggered the door. I did not see any indication of power measurements on the other buttons, which are old and we're never lighted. I think I may just find a momentary switch that can handle 36 volts. Garage Door Opener Sensors. Once inside the sensor, hard to say what the electronic board is doing with the voltage once it is fed in. Regardless, if you've got the proper voltage at the opener and down the circuit to the sensors, it would be a safe guess to assume either the sensor(s) are bad or the negative side isn't connected properly. Usually 12 volts DC, so your 13 volt reading is likely correct. Plus or minus a couple percent. So I am thinking because of the age of the opener it probably has a higher voltage running to the buttons. Use an OHM meter. – BMitch ♦ May 17 '12 at 21:51 That's not uncommon with less expensive meters. Measure the voltage as others have suggested so you know what voltage rating your new switch needs. On Sears model 139.53990 garage door opener the safety sensors have now failed to work after an electrical storm. Recommendations for a safe button ? My mistake in typing "dc". Should I not worry? In many other countries you will find 220v at 50Hz. No led lights on either sensor. The button still works, but my fear it that there is a lot more voltage running through it. If the switch is limited to #14 or larger, use a couple of pigtails, then wire nut to the bell wire. Which dishwasher works better; the $1,000.00 computerized Chrome model or the $300.00 plain white manual model? The voltage at the operator unit at the sensor wire connectors with the wires removed is about 1 1/2 volts. Something in the house does this weird whistle sound? Come join the discussion about tools, projects, builds, styles, scales, reviews, accessories, classifieds, and more! I am fairly certain it is dc, since there is no box in any of the connections, and they used bell wire. make sure there are no staples or nails through wires. I tried to test the voltage, but couldn't get a decent contact before the opener would engage and open. Usually 12 volts DC, so your 13 volt reading is likely correct. It works fine, but need to change one of the operating buttons. Here in the USA all residential garage door openers use 120v and 60Hz. +1 When I was a kid, I took some speaker wire and a random push button switch to make my own door opener (I lived over the garage and didn't feel like walking down to the door to let people in). The voltage to the sensors is usually transformed at the main opener to "low voltage", probably DC but maybe AC. Join Yahoo Answers and get 100 points today. Garage door openers use a receptacle in the ceiling for power. The only specs I could get off the unit was that input v is 110. The voltage to the sensors is usually transformed at the main opener to "low voltage", probably DC but maybe AC. what should the voltage be at my garage door opener sensors. Per your pic, the meter is set to DC amps, which passes full current thru the meter. What do I do with my burnt out fluorescent bulbs? Garage Door Opener Wiring. Thank you for the reply. Weird. Helping You to Do It Yourself! Took 2 days to go out. The wired controller and sensors use low voltage wiring (usually 24V) to connect to the motor unit. It's lighted button burned extremely bright and I knew within days it would burn out. JavaScript is disabled. 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. The electrical rep at the home center said the doorbell and garage button are the same.