A guy at work asked me to find this out for him....

Stanley ST-400 garage door opener with obstruction sensors that are used to prevent the door from closing on crap. The question at hand is this. How can you bypass the sensor system. The sensors do not work at all, and it'* seemingly a resistance based system. He needs to know what the resistance is so he can bypass the sensors and get the door to function again. Any help would be greatly appreciated!

Did you google-ize it yet?

Working on that end of it too. Just trying to spread my coverage and see what others know or can find.

Right. I get it! I asked so that I wouldn't duplicate your effort, since I don't know your answer. Good luck!

I assume the sensors are installed correctly, right? Meaning they're ~18' apart?

I would unhook them and put the two eyes ~3" apart from each other. See if that'* enough to trick. Could be that the sending transmitter is getting weak, or that the receiving sensor is weak. Tightening up the gap could eliminate the issue.

I'll pass the info along. So far, I'm finding that there is no way to bypass it. I'm thinking that is bunk. One sensor I read about, albeit not the ST400 sensor, was supposedly photovoltaic, or some crap like that. Solar panel basically. If he could force the correct measured voltage through the receiver wires, it would, in my mind, trick the system. I'll suggest the putting them together though. Thanks!

P.*. I know nothing of how they are installed. The guy is pretty meticulous about that stuff.

It'* probably a more open or closed circuit type situation. I bet there'* two wires he can either cross or cut and it will work again.

Shorting them didn't work. He already tried.

I don't have the sensors on my garage door but when I get a new one I was just thinking of placing them above the garage door so that the sensor will never be interupted. In other words, high enough so that the beam will always go across.

Both sides at the same time?