Potter EH-24R Red Facepalte low profile electronic horn that offers dependable audible output at the lowest current available. The EH24 Series horn offers a continuous or synchronizable 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 EH24 Series is s hiped with the standard 4in mounting plate which incorporates the popular Super-Slide 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. The EH24 Series also features the patented Checkmate – Instant Voltage Verification feature, which allows the installer to check the voltage drop draw and match it to the blueprint.