S4A Industrial Co.,Limited
+86 130 40800588
Skype: crypton0929
Address: 2nd floor of Jinmin'an Industrial Zone, #529, Bulong Rd. Bantian St. Longgang Dist. Shenzhen,PRC.518129

FAQ News Center
Who is S4A?

S4A INDUSTRIAL CO.,LIMITEDS4A is a manufacturer for Fingerprint Glass Lock, Wireless Door Lock, Magnetic Lock, Dropbolt Lock, Strike Lock, Cabinet Lock, Facial Recognition Door Lock and Fingerprint Door Lock in Shenzhen, China since 2006, Your b…...View Details+

FAQ for UHF Passive RFID Reader

ProblemsPossible ReasonsTry SolutionRead tag distance shorter or don't read tagReader's paramaters settings correct or not?Connect demo : connect--basic parameters-default all parameters--set parametersEnvironmental signal interferencMov…...View Details+

Whats is Access Control

In physical security, the term access control refers to the practice of restricting entrance to a property, a building, or a room to authorized persons. Physical access control can be achieved by a human (a guard, bouncer, or receptionist), through mechan…...View Details+

How does an Access Control System Operate

When a credential (card, fob, fingerprint, etc.) is presented to a reader, the reader sends the credential’s information, usually a number, to a control panel / processor. The control panel compares the credential's number to an access control list, …...View Details+

Magnetic Locks (maglocks) Versus Electric Strikes

S4A Magnetic Locks (maglocks) Versus S4A Electric StrikesStep 1 Fold the mounting template to make a 90-degree angle. Place this up against the door frame and the door, ensuring that door opens outwards from this position. The holes in the template i…...View Details+

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