How to match the codes of the five-party intercom in an elevator

Steps for matching codes between the main unit and the extension:

The first step is to place the main unit and the sub-unit together, connect the antenna and power supply, and do not power on for the time being.

Step 2: Press and hold the recording hole of the extension, turn on the power switch. After powering on, release your hand when the working light turns red. At this point, the extension enters the code matching state.

Step 3: Press and hold the code matching hole of the main unit, turn on the power switch. After power-on, the number 00 or 000 will be displayed on the LCD screen of the main unit. At this point, the main unit enters the code matching state.

Step 4: Enter the required extension number on the main unit, for example, 121, representing Unit 1 of Building 12. Then press the code matching key on the main unit. At this time, the lights of both the main unit and the extension will flash, and the main unit will sound simultaneously. The host interface jumps to the number 000, the working light of the extension turns green again, and the code matching of a single extension is completed. If you need to add extensions, just repeat step two.