1.OEM 10-zone home alarm system 2.Lowest price,best quality 3.CE CCC ISO ... numbers.4.The systems has delayed time alarm, So enter time, departure time,alarm sound time can be set.5.When detector ... person know which defence zone intrude,at the same time the systems can send out loud alarm automatically.when ... remote control deploy alarm or disarm,in the normal time it is can be use as a doorbell,send ...