These alarms are small enough to fit into control panel boxes and with micro-controller based circuitry, they can generate almost unlimited sound options. They combine high quality sound with dB levels 10-15 decibels louder than anything currently available in the same size. Key features: fits standard 22mm panel hole, continuous & pulsing tones, voltages from 6 Vdc to 120 Vac, sound levels up to 95 dB @ 2 ft, cUL zpproved; RoHS compliant, NEMA 3R/4X/12; IP-66, CSA C22.2 No. 94, terminal block termination: finger-proof safe handling, prevents shock & shorting, saves assembly time & labor. For samples or more information, please send an email to MyFeedback@dee-inc.com, and be sure to include your contact information.