Handler Update System

About

Radionics Inc originally ran a "Handler Update System" which was used to download handler files to D5200 programmers over a standard telephone line. The original server eventually went offline sometime around 2019, however I have reverse engineered the protocol far enough to re-create the server and allow handler updates again.

This custom update server operates just like the original, and is open for people to use to update their programmers. Please note that downloading handlers from this server takes longer than the original one did. With the original system being offline I have not been able to fully understand the protocol it uses, so it is currently not able to transfer the handlers without the database being included in them as well. This does not affect the operation of the handler, it only makes it take longer to download the handler than it originally would have.

Downloading Handlers

To download a handler to your programmer, follow the steps below:

1. Connect the TELCO jack on your D5200 programmer to an analog phone line (VoIP lines may not work reliably as their compression does not handle modem connections very well)
2. From the main menu on the programmer, scroll to the UPDATE option and press ENTER GROUP
3. Under the "HandName" field, enter the name of the handler you wish to download and press ENTER
4. Under the "Include Help" field, use SPACE to scroll to "No" and press ENTER
5. Under the "Phone" field, enter "13044517092" and press ENTER twice
6. Under the "Mode" field, use SPACE to scroll to "TELCO->A" (or "TELCO->B" for downloading to a RAM card) and press ENTER

The programmer will now pick up the phone line and use pulse dialing to call the handler update system. After the download process has been completed the programmer will display "UPDATE SUCCESSFUL" and you will have the new handler available for use. If the call does not go through the first time, try again in a little while, the server can currently only answer one call at a time.

If your programmer displays "HANDLER NOT FOUND" when trying to download a handler, first make sure that the handler name is typed properly, and the handler is listed in the available handlers below. If those are both correct, use the "DELETE" menu to delete the handler (even if it's not showing in the list) and then try the update again. Sometimes this process needs to be done if the handler was previously on the programmer, or was corrupted.

Handler List

Please note that multiple of the Honeywell handlers have been found to corrupt the memory in a D5200 programmer, I am not sure if this has to do with my copy of the handlers or if they are just badly programmed. I must suggest that you ensure you have backups of any important handlers or information currently installed on your D5200 before downloading Honeywell handlers to it. All the Radionics handlers on this page have been tested and confirmed to be safe from any corruption or operational issues.