Multiple types of hooters/siren used in burglar alarms. Depending upon applications indoor or outdoor any model can be selected.The level of sounds in decibel can be considered as per requirement.
Sirens & Hooters--
Flasher Siren with Light
Model No. AVL-135
Current: 80mA. Output:106 dB Size:84mmX54mmX34mm
Beeta Siren
Model No. BET-121
Current: 400mA Output: 108dB Size: 85×65
Square Siren
Model no. SQR-117
Current: 100mA Output: 110dB Size: 60mmX60mmX70 mm