Price (USD) Category Review Manufacturer Product
20 Air Horn     Harbor Freight Air Horn
3.50*6 Buzzer   Projects Unlimited Adjustable Buzzer EXL-960
2.50*6 Buzzer     Super Buzzer
2.65*6 Buzzer   Projects Unlimited Audio Indicator EXL-450
0.65*24 Buzzer   Projects Unlimited Miniature Piezo Audio Transducer AL-256K
20*2 Host FR Mag Instrument Black 4C Mag-Lite
10 Air Horn   Pit Bull Pit Bull CHIH310 (High Horn)
10*3 Air Horn   Pit Bull Pit Bull CHIH310 (Tri-Horn)
40 Air Horn   Wolo Manufacturing Wolo Bad Boy

 

Price (USD) Category Review Manufacturer Product
26 Ear Muffs   Howard Leight Shooter's Premium Earmuff Leightning L3
13 Ear Muffs   Silencio Original Earmuff Hearing Protector RBW-71
50 Decibel Meter   RadioShack Digital Sound Level Meter