The Commander3 Series is a low profile horn strobe combination that offers dependable audible and visual alarms and the lowest current available. The GE3 Series has a minimal operation current and has a minimum flash rate of 1Hz regardless of input voltage. The Commander3 Series horn offers a continuous or synchable temporal three in 2400Hz and mechanical tone, a chime and whoop tone. All tones are easy for the professional to change in the field by using switches. The Commander3 Series is shipped with the standard 4" metal mounting plate which incorporates the popular SuperSlide feature that allows the installer to easily test for supervision. The product also features a locking mechanism which secures the product to the bracket without any screws showing.Gentex does not recommend using a coded or pulsing signaling circuit with any of our strobe productsNot listed for outdoor use.