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Phone number coded lock circuit

2017-01-08 18:49  
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Phone number coded lock circuit
Phone number coded lock circuit is shown as above,this picture is the specific application circuit of digital password integrated blocks BA9101,it is composed of keyboard,multi-functional dial-up integrated network circuit,peripheral control circuit and so on.This coded lock has a major, minor secondary control,it is suitable for three kinds of use levels and can respectively control according parameters.Keeping password and parameters is supplied by the lithium battery,it is not lost in five years.