HIKVISION KD3 Series Quick Start Manual page 27

Video Intercom Door Station·Quick Start Guide
Figure 3-4 Install the Door Station
5. Pull the door station downward and then push it towards the inside to make sure it
fits the hole.
6. Tighten the screws of the door station with the Allen wrench.
Figure 3-5 Tighten the Screws of Device
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