Mall anti-theft door alarm what circumstances will ring
2, the goods purchased without degaussing. If the payment is made, the cashier will receive the magnetic induction signal if it is not paid, if the payment is made,
???If the goods have not been demagnetized by the loss of the door when the alarm will be. After the customer picks up the goods in the cashier payment, the cashier will be with "soft" and "hard standard" of the product demagnetization, if it is "soft" in the cashmere table demagnetizer degaussing, if it is " Hard standard "will use a special tool to the" hard standard "and commodity care. So that the goods purchased by the customer can safely pass the "damage to the door".
Supermarket goods are generally equipped with two kinds of anti-theft devices, one is a small magnetic stripe, commonly known as "soft", the other is a pin-type magnetic device, commonly known as "hard standard", they are using magnetic induction principle Anti-theft, supermarket door alarm device, also known as "damage to the door", which is equipped with magnetic sensors.
1, who have magnetic things, or magnetic stripe and the like, so when the door, the door will ring. The door will only ring when it comes to magnetic things.
