The Cooper Wheelock E90-24MCC-FN is a nickel colored round speaker strobe with a candela rating of 15/30/75/95cd, an input voltage of 24 VDC and FIRE printed on the unit. The strobe is designed for high efficiency sound output, with dual voltage (25/70 VRMS) capability and field selectable taps from 1/8 to 2 watts. The low profile design incorporates a speaker mounting plate for faster and easier installation. Each model has a built-in level adjustment feature and an aesthetic two (2) screw grille cover.