Sierra Monitor’s Sentry IT Fire and Gas Detection System’s capability of simultaneous interface via RS-485 Modbus, Analog 4-20, Relay contact and SentryBus insures that both new and legacy sensor modules can be deployed. Sentry Commander Logic insures that complex algorithms such as zone voting, delay timing, multiple unique alarm levels and other special requirements can be implemented with simple user configuration at the spreadsheet level.Fire & gas detection

Sierra Monitor Corp.,, (800) 727-4377. Circle 275