This video shows you how to adjust the duration of the siren on you Honeywell LYNX Touch L5210 wireless security system. To adjust the duration of your Honeywell L5210 wireless security system siren from the home screen select security, more, tools, installer code "default is 4112", program, scroll down, sounder, burglary bell timeout adjust by pushing selection box, save, back, yes, exit to home screen. Keep in mind when adjusting your bell timeout duration of your siren you by law you cannot have a alarm siren sound longer than 15 minutes.

The Honeywell LYNX Touch L5210 wireless security system by default comes with a 85db internal siren. From factory the Honeywell L5210 siren if activated will last for 4 minutes. By following this how-to-video you can learn how to adjust the length of that siren.  

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Honeywell LYNX Touch L5210 Frequently Asked Questions "FAQ's"

Alarm Monitoring:
Honeywell L5210: