SR 105SR 105 is an indoor piezo siren suitable for use in intruder alarm systems .
SR 110SR 110 is an indoor piezo siren suitable for use in intruder alarm systems.
SR 200SR 200 is an outdoor microprocessor controlled electromagnetic siren.
SR 300 OSR 300 O is an outdoor piezo siren. The siren has orange flash indication and selectable loudness levels. SR 300 O is equipped with inner metal casing and bidirectional tamper for higher protection.