Model AV1-LED is a combination audible/visual signal. The AV1-LED features a 100% polycarbonate housing that is rated for type 3R rain-tight applications. All AV1-LED units feature a unique twist-and-lock dome design to allow for tool free access to the LED. The Fresnel lensing provides superior visibility in all directions. The integrated buzzer provides 85 dBA output at 10 ft (95 dBA at 1 m). The unit is capable of independent flashing light and sounder operation. The LED can be field adjusted to two flash patterns, 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 in the base of the unit.