Supply Of Gang Hootergang Hooter, Gang Hooter, Mechanical Hand Operated. 1. Material Aluminium Alloy. 2. Sound Distance :300 - 500Mtrs. 3. Sound Intensity: 105-110 Db. 4. Maximum Weight -12Kgs. As Rdso Specification No.Tm / Sm / 318 Rev.01 Of 2021. [ Warranty Period: 30 Months After The Date Of Delivery ]