Audible Warning ECCO White Noise Alarms (Multi-Frequency) Multi-Frequency Alarms Decibels: 87 – 107 DB(A) Voltage: 12-24V / 36-80V DC Current: 0.4A – 1A @ 12V DC 2-bolt Mounting Preco Multi Frequency MF100 Series Preco Multi Frequency MF200 Series Preco 100 Series Heavy Duty Back-up Alarm Preco 200 Series Compact Back-up Alarm Preco 3000 Series Back-up Alarm Preco 300 Series Heavy Duty Back-up Alarm Preco 45 Series Heavy Duty Back-up Alarm Preco 40 Series Back-up Alarm Flush Mount Preco 6000 Series Heavy Duty Back-up Alarm Preco Forward Horn 117 Preco Forward Horn 312 Preco Multi Frequency Series