Kentec Sigma ZSi - 6 LED Extinguishant Status Unit c/w Manual Release & Mode Select Keyswitch (K921110M8)

The Kentec Sigma ZSi K921110M8 is a 6-lamp extinguishant status unit with a mode select keyswitch and a manual release push-button. It extends the indications, and some controls, of Kentec Sigma ZXT extinguishant control panels to other points around the protected area, which is useful where a room has several doors or access points.

The unit is designed in accordance with EN 12094-1. Up to seven status units can be connected to each control panel extinguishant area, all on a two-wire RS485 data bus and powered from the 24 V DC auxiliary output of a compatible extinguishant control panel.

Key features

• LED indication of Manual Only, Auto/Manual, Hold Activated, Disabled, Imminent and Released
• Numeric countdown display showing the seconds until discharge
• Mode select keyswitch: Auto & Manual or Manual Only, with the key removable in either position
• Manual release push-button beneath an anti-tamper cover, with a plastic tamper seal supplied in the accessory pack
• Monitored remote Mode and Hold inputs
• Address set by DIP switch; internal COM, HOLD, MOD, CPU and FUSE status LEDs
• Flashes all LEDs (and sounds the buzzer, if fitted) to show a communications fault

Technical specifications

• Product code: K921110M8
• Power supply: 21 to 30 V DC
• Quiescent consumption: 33 mA; max. current consumption: 70 mA
• Data connection: two-wire RS485, max. 1200 m
• Max. status units: 7; max. ancillary boards: 8
• Monitored inputs: 6K8 (0.5 W) end-of-line resistor; normal 8K to 1K ohm, trigger 700 to 100 ohm, short circuit 99 to 0 ohm
• Cabling: fire-resistant cable such as FP200 with metal glands; max. 25 ohms per core; terminals up to 2.5 mm²
• Cable entry: 20 mm knock-outs
• Ingress protection: IP30