... and voice alarm Speeding Alarm-- alarm annunciator for car, beeper, Forklift,Vehicle speeding alarm, over speed buzzer When ... to operate with full functions.• 4 levels volume adjustment for different occasions.• External clear & loud alarm speaker, ... from 0 to 99 seconds, if speed of forklift exceeds the preset, will warn.• Eight-level waterproof ... sound output: 120 dB. Over-speeding Alarm for forklift