Mini horns are compact electronic alarm appliances that are ideal for alarm signalling in individual rooms, apartments, hotels and offices where attractive appearance and dependable performance are prime concerns. High sound output for enhanced audibility (over 90 dBA at 10 ft) at 24 VDC. Silence push button and red LED to indicate active signal circuit on MH-S25 versions. 24 VDC models with wide listed voltage range, filtered DC (Non-silenceable only). Polarized inputs for compatibility with standard reverse polarity supervision of circuit wiring by an alarm panel. Mounts into standard single gang box. Flush or surface mounting options. Compatible with sensitive detection and communication circuits.