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SenTRI4 fire system
Relative Humidity up to 90% (Non condensing) Temperature 0ºC to +45°C
Indicators LD1 - LD5 indicate RAM, ROM and EPROM status, error,
checksum and communication
EN54 Part 4 data
SENTRI4 PSU
with 24 hr standby
I min -> 780uA
I max a* -> max quiescent loop current -> 108mA @ 43.5V
I max b -> max alarm loop current -> 3.15A @ 46.4V
Ri max -> 0.9R
UVLO -> 20.7V ± 0.4V
*max a - Max loop current
27mA x 4 = 108mA quiescent for SENTRI4 panel
Primary DC Output Voltage 43V ± 5%
ripple Voltage (peak to peak) <1%
Hazardous voltages may still be present even when the indicators
are extinguished.
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