Plug-in design with minimal intrusion into the back boxAutomatic selection of 12 V or 24 V operation at 15 cd and 30 cdField-selectable candela settings of 15, 30, 75, 95, 110, 135, or 185 cd Features: Plug-in design with minimal intrusion into the back boxAutomatic selection of 12 V or 24 V operation at 15 cd and 30 cdField-selectable candela settings of 15, 30, 75, 95, 110, 135, or 185 cdHorn rated at 88+ dBA at 16 VRotary switch for horn tone and two volume settingsCompatible with MDL3 synchronization...