Aiphone KB-3HRD Sub Monitor with Handset

Increase on-site security and simplify visitor management with the Aiphone KB-3HRD Video Sub-Master Station. As a sub monitor for the KB-3MRD master, this Aiphone unit delivers the same master-level controls — including selective or all-call functions and optional selective door release — so teams can verify visitors and grant access from remote points. The 4" TFT LCD provides clear, instant visual confirmation while full-duplex audio and the included handset enable private, two-way conversations for faster decision-making. Designed for installers, the KB-3HRD uses a simple 2-wire connection with a maximum wiring reach of 650' and supports up to four sub monitors per system, reducing labor and cabling complexity. NDAA and TAA compliance make it suitable for government and commercial procurement. Ideal for offices, schools, healthcare and multi-tenant buildings, the KB-3HRD integrates cleanly into existing security and surveillance setups—add it to your door entry solution to improve monitoring and access control today.

• Adds a full-function sub-station so staff can respond, monitor and control entry from additional locations
• 4" TFT LCD for quick visual ID, reducing unauthorized access and improving visitor verification
• Full-duplex audio plus handset for natural, private conversations and immediate response
• Simple 2-wire hookup with up to 650' wiring distance lowers installation time and cost
• Supports up to four sub monitors per KB-3MRD system for multi-point monitoring across facilities
• NDAA/TAA compliant with flexible desk, surface or wall mounting for procurement-ready deployments