BRAVO SR300 ALK is a wireless piezo siren for outdoor mounting designed for operation in BRAVO wireless intruder alarm systems or with ECLIPSE WL wireless expander module in ECLIPSE hybrid systems. The siren can be located in a distance up to 400m away from the control panel.

BRAVO SR300 ALK is equipped with sound and LED indication for announcing of alarm events, inner metal casing and bidirectional tamper for higher protection. An external adapter 12VDC/1A may be used to power the siren and prolong the battery life.

The siren has a flat plastic cover, which is especially suitable for company sticker or logo.

BRAVO SR300 ALK operates with alkaline batteries, included in the equipment.



SKU: 588 Category:


  • Suitable for outdoor mounting
  • Two-way tamper switch for self-protection of the box
  • Separate alarm notifications for intrusion and fire
  • Squawk functionality
  • Button for restoring the factory settings (RESET)
  • Internal metal cover for better protection
  • Plastic cover for protection of the electronic components
  • External power supply with adapter
  • Chaising LEDs indication optional switching
Battery 4×1.5V, Alkaline
Battery life 3 years*
Battery low voltage signal signal sent at value < 5.1VDC
Operation frequency 868MHz
Radio distance (open space) Up to 400 m
Loudspeaker type piezo
Operating temperature -10°C ÷ +40°C
Sound volume 110dB/1m
Dimensions 310 x 230 x 60 mm














* Based on normal use of the siren (e.g. 1 alarm per month with strobe and 1 minute alarm cycle, and 8 squawks per day at an average of 25°C).

If the use is more frequent or the alarm cycle is set for more than 1 minute the battery life may be reduced.

Using optional power supply with adapter 12V/1A will extend the battery life.

Product Documents


BRAVO SR300 ALK - Declaration of conformity
Updated at 17.03.2022 Size 0.59MB
BRAVO - Certificate RTTE Directive
Updated at 16.03.2022 Size 3.73MB

Marketing Documentation

BRAVO SR300 ALK - Datasheet
Updated at 11.04.2020 Size 0.14MB

Technical Documentation

BRAVO - Installation Manual
Updated at 11.02.2022 Size 5.18MB

Product pictures

BRAVO Training Videos