The Hikvision DS-KIS202T analog intercom kit is built on a dedicated four-wire architecture designed for point-to-point entry control and internal distribution. System expansion, lock integration, auxiliary camera connectivity, and cabling requirements follow strict electrical and signaling parameters across all bundled and auxiliary components.
System Capacity and Intercom Expansion Limits
The DS-KIS202T intercom topology supports multi-point monitoring and calling configurations across residential and small commercial entryways. The core infrastructure supports the following maximum node counts:
- Door Stations: Supports a maximum of 2 door stations (such as the included DS-KB2411T-IM) operating simultaneously on the same system network.
- Indoor Stations: Supports cascading up to 3 indoor stations (such as the included DS-KH2220) simultaneously within the intercom layout, allowing multi-room call answering and access release.
- Auxiliary Video Input: The DS-KH2220 indoor station features a dedicated auxiliary input interface supporting the direct connection of 1 external analog CCTV camera for supplemental viewing.
Cabling Infrastructure and Transmission Distance Specifications
Interconnection between the door station and indoor stations utilizes a 4-wire physical interface consisting of one channel for video signal input, one channel for bidirectional audio input/output, one channel for power supply delivery, and one channel for system grounding. Signal integrity and voltage stability over extended cable runs depend directly on the conductor cross-section.
Installations must adhere to manufacturer RVV4 copper conductor sizing across specific transmission distances (TD):
| Transmission Distance (TD) | Required Cable Specification |
|---|---|
| TD ≤ 10 m | RVV4 × 0.2 mm² |
| 10 m | RVV4 × 0.5 mm² |
| 30 m | RVV4 × 0.75 mm² |
| 50 m | RVV4 × 1.5 mm² |
Exceeding recommended run distances or utilizing undersized conductors leads to video signal attenuation, display flickering, and reduced audio signal levels. The kit includes an initial 5-meter 4-wire connection cable for standard short-run bench testing and surface installation.
Lock Release and Access Control Compatibility
The DS-KB2411T-IM door station is equipped with 1 relay output interface intended for automated door latching hardware:
- Lock Types: Compatible with electric bolts, magnetic locks (maglocks), and electric strikes via the onboard dry relay contact.
- Power Isolation: The lock release relay does not deliver operating power. Connected electric bolts, strikes, or magnetic hardware require an independent external power supply wired in series through the door station relay circuit.
Power and Electrical Constraints
The bundle operates on a regulated 12 VDC electrical supply. Maximum power consumption is rated at 5 W for the DS-KB2411T-IM door station and ≤5 W for the DS-KH2220 indoor station. During installation, field technicians must verify terminal pinouts; connecting the 12 VDC power lead to the video (V) or audio (A) terminals will cause permanent circuit failure.
