K1821-11

SIGMA A-SI Extinguishant Status & Ancillary Units

The Sigma A-Si range of status indicators provides detailed status information for Sigma A-XT releasing control equipment.
All models provide high brightness, LED indication of Manual Only, Automatic and Manual, Abort Operated, Disabled, Imminent and Released conditions.
Models are also available with zonal fire indicators and a common trouble indicator.
For systems where local control of the Automatic/Manual mode and or a Manual extinguishant release control are required, units are available with these controls fitted. All models have supervised inputs for the remote connection of Automatic/Manual mode and abort switches.
All units contain a large, LED display that shows a countdown of the time remaining until release in seconds.
Up to seven Sigma A-SI status units can be connected to the Sigma A-XT serial bus and require just two cores for data and two cores for power. Once connected, status units are supervised, and the Sigma A-XT control panel will indicate a trouble condition should any unit become disconnected.

Product code:

K1821-11: 6 lamp status unit surface mount – red
K1821-41: 6 lamp status unit surface mount – grey
K1821-13: 6 lamp status unit with mode select keyswitch surface mount – red
K1821-43: 6 lamp status unit with mode select keyswitch surface mount – grey
K1821-15*: 6 lamp status unit with manual release surface mount – red
K1821-45*: 6 lamp status unit with manual release surface mount – grey
K1821-17*: 6 lamp status unit with mode select keyswitch & manual release surface mount – red
K1821-47*: 6 lamp status unit with mode select keyswitch & manual release surface mount – grey
K1821-19*: 10 lamp status unit with mode select keyswitch & manual release surface mount – red
K1821-49*: 10 lamp status unit with mode select keyswitch & manual release surface mount – grey