Question about Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+

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How to add additional garage door opener safety sensor

I would like to know if it is possible to add an additional safety sensor to my garage door opener. I have a LiftMaster and it already has one set of IR sensors that are mounted 6 inch of the floor.

My new van is almost as long as the garage space and I am afraid that I'll close the garage door on it. I already have a laser paring aid but I want to add another layer of insurance against a demaged car.

Have anyone try adding an other pair of safety sensor? I would like to add a pair so that the bumper of my van will block them when it is not parked correctly. Other suggestions are welcomed.


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Cant be done. put parking bumper on flor so you know you pulled in far enough. you are only one I know who installed parking laser. I don't. If customer isnt home when I install gdo, how do I aim laser. What about when they get new car. They want you back for free to adjust, No way.

Posted on Jan 15, 2009

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When garage door is opening the safety sensors activate and starts closesing the garage door. They should activate when I close the garage door.How can I correct this action?

How do you know it is the sensors? Has this opener ever worked properly? Do the main lights flash 10 times when the door reverses? If the opener worked before have you had it apart or done some work to it?

Jan 24, 2011 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Need to add obstruction sensors to an older Craftsman Garage door opener that never cam e with them. Is this possible?

Generally not. To get the sensors alone would cost very near the price of a new unit equipped with video sensors. You could verify this with Sears.

Sep 02, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Liftmaster Chamberlain Garage Door Opener Transmitter 300MC: Light keeps on flashing on the motor...

how many flashes
1-safety sensor wire broken
2-safety senor wire shorted or reversed
3-door control or wire short
4-safety sensors mis aligned
5-motor overheated or bad RPM sensor
6-circut failure, bad logic board

May 17, 2010 | liftmaster Chamberlain Garage Door Opener...

2 Answers

Genie garage door will not close if safety photo eye sees sunlite

Most photo electric eyes have sensitivity settings. A small dial or screw that can be adjusted.
If there is none, then another trick would be to recess back further from the actual opening, and put is on the wall as far as possible.
Finally, you could add a tube to act as a sunshield. They probably have one that can be special ordered for it.
And it even that does not work, consider taping a sheet of polarized film over it, like a single sunglass lense.

Apr 19, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Craftsman 41A3625 garage door opener safety "eye". Buying a new home and the inspector informed us that there is no safety eye system on our garage door opener. It appears to be a 1995 model (at the bottom...

Your opener was manufactured before there were safety sensors and there is no way to add them. You would be miles ahead to replace the opener with a new state of the art model.

Sep 07, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage Door Opener Malfunction


Aug 26, 2009 | Liftmaster, Chamberlain, Sears Door...

1 Answer

Replaced door sensors now door will not go down and light flashes

The safety eyes are either installed wrong, or you have the wrong type. Craftsman (liftmaster) has what they they call old style and new style safety eyes. You can not interchange the types.

Feb 16, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Liftmaster garage door opener problem

stop adjusting. you are doing right thing. unit will not run down w/o eyes so removing wiring did nothing. you gave clue when yu said they were folloded. buy new set of eyes.

Oct 04, 2008 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door sensors

#2 and 3 on my opener. #1 and 2 are atteched to the wall button. So # 2 has both attached. Hope that helps.

Aug 20, 2008 | Sears Craftsman LiftMaster Chamberlain...

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