How to wire the intercom access control in Yaoda Building

First go to the intercom extension of the corresponding floor to observe the electric well diagram, and connect them one by one by letter or color.

There are four interfaces at the back. Four-core wire connection is used, and different models of hosts are different. Stainless steel host I(TXD) is connected to the white wire, and II(RXD) is connected to the black wire. III(GND) is connected to the red line, and the green line is connected to the ringing.

The aluminum drawing model is that the host red line (TXD) is connected to the extension white line, the host white line (RXD) is connected to the extension black line, and the host black line (GND) is connected to the extension red line. The remaining one is the ringing line, which is the green line. This is Li Lin's correct wiring and wiring method.

There are two green lines on the main engine, one is a black line and the other is a green line. Test it yourself. The branch circuit board is connected to the socket of each extension? The wiring will have an identification letter. Generally, it is power supply+12V, GND (negative pole), A/B or R/T (data transmission line), AU (audio positive pole), AG (audio negative pole), VI (video positive pole) and VG (video negative pole). If it is not visible, there is no video group.

You look for it, then look at the color of the line, then align the interface on your new extension and connect the corresponding line.

Extended data:

The door of the building is always locked at ordinary times to prevent people who are not in the building from entering the building without permission, and residents in the building can freely enter and leave the building with their keys. When guests visit, they need to press the room number of the visited household on the intercom keyboard outside the building door and call the intercom extension of the visited household.

The owner of the visited household makes a two-way call or visual call with the visitor through the intercom equipment, and confirms the identity of the visitor through the voice or image of the visitor. After confirming that visitors can enter, the owner of the household uses the unlock button on the intercom extension to control the electric door lock on the entrance door of the building to open, and the visiting guests can enter the building. After the visiting guests enter the building, the door of the building locks automatically.

The security department of residential property management can monitor the work of the security intercom system of each residential building in the residential area through the security intercom management host. If the entrance door of a residential building is illegally opened and the security intercom host or line fails, the community security intercom management host will send an alarm signal and display the alarm content and location.

The system can be used for communication between residential property management departments and households or between households. For example, the property department informs residents to pay various fees, residents inform the property management department to maintain the facilities in the community, and residents report to the community or neighborhood Committee managers for help in case of emergency.