Self adjusting: HELLA RetroVox Self Adjusting Alarm
Withstands most punishing environments: HELLA RetroVox Ultra Heavy Duty Alarm
White noise: HELLA RetroVox Compact Broadband 87 dB Alarm
Spark-free electronics: HELLA RetroVox Broadband Alarm
Extremely long life: HELLA MotoVox Compact 117 dB Horn
High-decibel rugged horn: HELLA MotoVox Forward 117 dB Horn
Solid state electronic horn: HELLA MotoVox Compact 107 dB Horn