LEWIND 40mm RYG THREE Color Signal Tower Light with incontinuous buzzer(YWJD-40A)   Operating Temperature: -40 degree ~ 75 degree Operating Humidity: ≤98%

Altitude : ≤2000m

Vibration resistance: 50Hz, vibration about1.2mm continuous operating time: 40000hours for LED continuous light 25000hours for LED flast light Sound pressure level:80~90dB in 1 meter Class of pollution:3