• The industry leading Sigma XT extinguishant releasing panel, installed extensively in thousands of premises globally, offers outstanding value and performance for all small to medium fixed firefighting installations.
• With three detection zones as standard, extinguishant release can be configured to activate from any combination of detection zone inputs.
• Sigma XT panels are both robust and easy to install having all the electronics mounted on a single, easily removable, steel plate.

• Certified compliant with BS EN12094-1 when used with Sigma XT control equipment
• High brightness LEDs
• 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
• Option for zonal fire and common fault indication with buzzer
• Robust, high quality enclosure
• Easy access to terminals
• Remote Auto/Manual door interlock input (monitored)
• Remote Hold input (monitored)
• Internal fault diagnosis indicators
• Weatherproof IP65 versions available Internal buzzer

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Sigma Si

Construction: 1.2mm mild sheet steel
IP rating (standard box): IP30
IP rating (waterproof unit): IP65
Colour - lid & box: BS 00 A 05 grey - fine texture
Weight: 1kg (all units)
Power supply: 21 to 30 V DC
Maximum current draw: 0.07A
Max. number of status units: 7
Quiescent current: 0.033A
Cable capacity: 2.5mm² per terminal
Monitored inputs end of line 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)

•  Certified compliant with BS EN12094-1 when used with Sigma XT