There are two common ways to enter and leave the door:

1. Swipe your card to get in and swipe your card to get out. We usually call it "two-way access control" or "two-way reading card", the advantage of this way is that the security level is higher, and generally no one is allowed to go out, and the people who go out have records to query and know who went out when.

2. Swipe the card to enter, go out without swiping the card, press the door button to open the electric lock to go out. We are usually called "one-way access control" or "one-way reading card", the advantage of this way is that it is convenient, convenient to go out, this way is more convenient to use than the first way, the security is slightly lower (prevent outsiders do not prevent internal personnel), the cost is lower, the popularity of this way is wider, for cost-effective consideration, most of the office access control within the department are using this model.

The "go out button" or "open the door button" used in this mode is an integral part of the access control device.

How the door button works

In fact, it is the principle of a doorbell button, when pressed, the internal two contacts are switched on, the button springs back when you let go, and the contact is disconnected. Therefore, in some projects, it is also possible for someone to directly use the doorbell button to make a door button. It's just that doorbell buttons are usually printed with a "bell" pattern on them.

Classification of exit buttons

According to the material: can be divided into plastic buttons and metal buttons. Plastic buttons are cheap, durable, and don't look as fancy as metal buttons. Metal button, looks high-grade, the service life is not as long as the plastic button, but it can also be used for many years, and the touch will be harder.

Plastic button Plastic button.

Metal button Metal button.

Selection suggestion:

For the construction of standardized buildings with weak current, plastic buttons are recommended.

If the decoration pattern is high-grade and gorgeous, it is recommended to use metal buttons.

If the decoration style is practical, simple and low-cost, it is recommended to use plastic buttons.