Don't Know the Code for your Ademco Security System?

Just move into a home with a Honeywell Ademco Security System and don't know the code? Not a problem, as a Member, Alarm Tech Online has instructions for changing both the Installer Code and Master Code even if you don't know what they are currently along with all the manuals for the system. *
This information along with all the manuals for the system for only $9.99
What would it cost to have an alarm company come out and do it for you? $65, $85, $95 dollars or will they lock you into a 3 or 5 year contact at $30 a month or more? You do the math.

These instructions are for the following Ademco panels.

  • 4110 / 4110DL / 4110XM
  • 4120 /4120XM / 4120EC / 4130XM / 4140XM / 4140XMP / 5130XM / 5130XT
  • VIA 30 / VIA 30P / VIA 30PSE
  • Vista-10 / Vista 10SE / Vista 10P / ADT Safewatch Pro
  • Vista-15 / Vista 15P
  • Vista - 20 / Vista 20SE / Vista 20HW / Vista 20P
  • Vista - 40 / Vista - 50P 50PUL
  • ADT Safewatch Pro 2000 / ADT Safewatch Pro 3000 / ADT Safewatch Pro 3000EN
  • Lynx / LynxR / LynxR-EN

* Please note that it is possible that the panel was locked out by the old alarm company and these instructions may not work. However, this is not normally the case unless you lease the system.

How do I find my Model Number?

" I am SO happy I found this site! After numerous calls to other alarm companies to come reset my system; without success unless I sign a contract with them, I started looking online. I found this site, and I found EVERYTHING I needed to reset the system myself. The website is very easy to navigate. Knowing your model # makes it even easier! I even got information to re-program my keypad. This is such a huge help to a new homeowner with an existing system and no prior documentation. I am so excited and cant wait to get home & start programming! THANK YOU SO MUCH!"

Amanda Cokendolpher

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Member Comments

" I am SO happy I found this site! After numerous calls to other alarm companies to come reset my system; without success unless I sign a contract with them, I started looking online. I found this site, and I found EVERYTHING I needed to reset the system myself. The website is very easy to navigate. Knowing your model # makes it even easier! I even got information to re-program my keypad. This is such a huge help to a new homeowner with an existing system and no prior documentation. I am so excited and cant wait to get home & start programming! THANK YOU SO MUCH!"

Amanda Cokendolpher

"I was having problems trouble shooting the 4110XM. I needed Technical Support; but it was the weekend and no one was open or available to me. I found this site on Sat. I bought a Membership on Sun. and with in an hour I found the information I needed and was able to fix the problem. I would strongly urge any installer use the information contained in this site. It is informative, easy to use and understand. Thanks!"

J.C. Jackson