GAA21750AK3 Universal Server Elevator Blue Test Tool Unlimited Times Unlock Elevators Service Tool TT/Converter

This is the tool the OEM doesn't want you to have. With one use, it will pay for itself.I've had an older Blue Tool for years, and finally a couple of the membrane buttons gave out. But I used it a LOT. I bought four of these as replacements, and the only weakness I've spotted is that on a couple tools, the magnets on the back aren't very strong.If you know what this is and how to use it, you'll be very pleased. If you're not a qualified and licensed professional trained in the use of this tool, then leave it alone before you hurt someone.

Funciona en los elevadores Otis, contiene 65,500 sesiones y los materiales se parecen mucho a los originales

Tool worked fantastic first few times plugging it in. But all of a sudden the screen went funky and little black rectangles fill all the screen. I can only see the MCSS+Ocss options if I look at the screen with an extreme angle. If I look at it straight on the screen is illegible due to the black rectangles. Not sure how to fix. Technically it still works I just need to set the tool at weird angles to view the screen.

For the price, this can't be beat. It won't come with a manual.

I can’t believe you can buy this online. Must have to work on controls. Great

Perfect price perfect tool will buy again

Tried to connect this unit to several controller and nothing worked. Returning

The first and only time I used this tool the screen went black in all the squares and I had to hold it at an angle to use it . It still worked but I'm afraid that the next time I have to use it , it may not work at all