Relay Controler Kit (RCD)

The RCD (Relay Control Device) expands the control capabilities of Millenium. The RCD is an add-on board that can control up to 8 additional programmable relays, for any product that requires voltage switching. It operates and logs history transactions into the memory buffer even if communications with the SCU have been interrupted.

Model/Part #: 149-100993

Product Description


  • Each RCD has 8 individually isolated single pole, Form C relay outputs, which can be programmed for activation by a variety of triggering sources
  • The RCD communicates using various types of supervised wiring methods, including Daisy Chaining, T-Tapping, Home Running, Star Configuration, and High Security Loop Back
  • Up to 10 RCDs can be connected to a single SCU, with a maximum architecture of 80,000 relays per system


Power Requirements:
9-14 VDC, supplied by the Kaba PS1 power supply; Current consumption is 50mA nominal, and 200mA maximum
Circuit Protection:
Input power is protected from reverse polarity, over-voltage and transient surges
RCD Device Communications:
A Twisted Pair, RS-485 polling scheme is used to communicate with the other Millenium Devices
Programmable Relays:
Each RCD employs 8 programmable single pole, Form C relays that are rated for 2 Amps at 24 VDC
All Events History Buffer:
2000 event, stored in RAM memory with a minimum of 24 hours backup
Priority Event Buffer:
100 software selectable priority events (alarms, com fail, etc.)
These events are stored on-board if the RCD is off-line with the host computer. Stored events are sent to the host computer once communications are re-established
Cover Tamper Switch:
On-board integrated tamper switch
Operating Temperature:
14° to 104°F (-10° to 40°C) less than 90% non-condensing humidity
4.24” x 7.35” @ < 1lb
10.8 x 18.7cm @ < 0.45kg
Certification / Listing:
UL 294

Product Literature

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