The model AV1-LED warning light is a combination audible/visual signal. The warning light also features a 100% polycarbonate housing that is rated for Type 3R rain-tight applications. All AV1-LED alert light units feature a twist-and-lock lens design to allow for tool-free access to the LED. The Fresnel lens provides superior visibility in all directions. The integrated buzzer provides 85 dBa output @ 10 feet (95 dBa @ 1M). The unit can operate in two ways: flashing/buzzer combination or flashing only. The LED flash pattern can be field adjusted to 60 FPM or 75 FPM, via a jumper on the PC board. Each unit is factory-assembled with two color-coded leads. If desired, the user can remove the leads and connect directly to the terminal block located at the base of the unit. Available in 24 Vdc and 120 Vac Five lamp/lens colors: Amber, Blue, Clear, Green and Red 50,000-hour LED Surface, integrated 1/2-inch NPT pipe, and 4-inch electrical box mount Twist-off lens for easy access Internal buzzer produces 85 dBA at 10' (95 dBA at 1m) Flexible operation allows the unit to independently flash without buzzer PLC compatible Type 3R enclosure UL and cUL Listed