When the "Call" button on the outdoor unit is pushed under standby mode, the indoor unit rings for 12 seconds. The screen lights up, displaying the visitor's image. If unanswered, the call automatically hangs up after 60 seconds. Pushing "Answer" starts a 100-second two-way intercom.

Push the "Monitor" button in standby mode to view outdoor images for 60 seconds. One-way audio is active by default; press "Answer" to engage in a two-way intercom for up to 100 seconds.

Supports dual unlocking: Push "Unlock the Door" for electric locks (1A current, 1s duration) or "Unlock the Gate" to open the gate (3s duration) during intercom mode.

Applies to systems with one outdoor unit and two indoor units. Indoor Unit A can call Indoor Unit B. The ring duration is 12 seconds, and the intercom lasts up to 100 seconds after answering.

Adjust brightness, contrast, color, intercom volume, ring volume, and select ring tones using the Settings and Navigation buttons.