Electronic Alarms and Home Security Devices - Replace Existing Keyfob Safewatch Pro 3000EN

I currently have a monitored Safewatch Pro 3000EN. My existing 4 button keyfob has broken the loop off where it goes on the keychain. I need to purchase and install a new keyfod.
What programming will be required to replace the fob so the system recognizes it? I do have a list of the zones for the existing fob. Where is a good place to shop for a new fob?
ADT tech said it would be $80 for a new fob installed.

On another question since my system is monitored what do I need to do if/when I add another motion detector zone? Does each zone need to be registered with the monitoring station (ADT)?

Thank You For Any Assistance You Can Provide.

This is a slightly modified Vista 20p, so that's the installer manual you want to search for.

If you have a 6160 keypad, in *56 you delete the serial number for the zones associated with the existing keyfob, then learn the new one into it's place. You shouldn't even need to change any other zone settings.

No, in this case, you really cannot do this with a 6150 (fixed english) keypad. There's just too many steps involved to do it without seeing the prompts.

For adding new alarm devices, what you need to do is read your monitoring agreement with ADT. Some versions specify how many zones are monitored, others don't. Some versions will not allow you to add new zones unless an ADT tech does it. Read the fine print...

You can replace the case only. Buy a 5804 keyfob, used is fine, you just need the case. Open the case and swap the circuit board and buttons to the new fob. No Programming

Thank you for the information and suggestion MrRonFL and kcxj. I will pursue those avenues.

Its truly a great thing to have persons with knowledge like yourselves help others DIY!

KD