View single post by slychiu

Posted: Tuesday Oct 7th, 2008 02:32 am

Joined:	Saturday Apr 29th, 2006
Location:	Singapore
Posts:	5498
Status:	Offline

On Ultra II, the bellbox is connected to SRN- and SRN+, also check the polarity

Some bellboxes require a lot of current - make sure that a battery is connected so that it can temporarliy supply extra current if required for the siren

Can you check the voltage between SRN- and SRN+ when the siren is turned on? It should be 12V or more. Please check this when the siren is not connected and then when it is connected

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