can't find a description for the ports LB- and LB+

Problems about Burglar Alarm
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can't find a description for the ports LB- and LB+

Post: # 1813Post admin
Fri Feb 25, 2011 12:42 am

Model: YL07M2B

the LB- and LB+ is for a two-way conversation speaker, input 12V dc
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