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Sigma Extinguishant Status Indicators

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Sigma Extinguishant Status Indicators
  • Detailed indication of the status of the control panel
  • Monitored data connection
  • Countdown timer shows time remaining until release
  • Manual only and Automatic & Manual mode select keyswitch option
  • Four wire connection (data and power)
  • Protected dual action manual release switch option
  • Remote Auto/Manual door interlock input (monitored)
  • Remote Hold input (monitored)
  • Internal Buzzer
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The Sigma Si range of status indicators provide detailed status information for Sigma XT/XT+ extinguishant release control equipment.

All models provide high brightness, LED indication of Manual Only, Automatic and Manual, Hold operated, Disabled, Imminent and Released conditions. Models are also available with zonal fire indicators and a common fault 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 monitored inputs for the remote connection of Automatic/ Manual mode and Hold switches.

All units contain a large, LED display which shows a countdown of the time remaining until the extinguishant is released in seconds.

Certified compliant with BS EN12094-1 when used with Sigma XT control equipment.

IP Rating (Standard unit


IP Rating (Weatherproof unit)



1kg (all units)

Power supply

21 to 30 V DC

Maximum current draw


Max. number of status units


Quiescent current


Cable capacity

2.5mm² per terminal

Monitored inputs EOL resistor

6K8 0.5W Resistor

Monitored inputs normal threshold

8K ohm to 1K ohm

Monitored inputs trigger threshold

700 ohms to 100 ohms

Monitored inputs

99 ohms to 0 ohms

Short circuit threshold data connection

Two wire RS485 connection (max 1200 metres)

Standard Indicator Dimensions (mm)

186(W) x 132(H) x 50(D)

Weatherproof Indicator Dimensions (mm)

256(W) x 170(H) x 60(D)







6 Lamp Status Indicator Complete with Mode Select, Surface Mounted

186(W) x 132(H) x 50(D)


Lamp Status Indicator Complete with Mode Select & Manual Release, Surface Mounted

186(W) x 132(H) x 50(D)


Lamp Status Indicator Weatherproof

256(W) x 170(H) x 60(D)


Wiring Diagram

Download Technical Information

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