PrintAlarm with Float Control Indoor Alarm Features: Can be used with any UL listed switching mechanism rated 1 amps, 24 VAC minimum. Operates on low voltage and is isolated from the 120V power line to reduce the possibility of shock. UL Listed and CSA Certified. NEMA 1 panel features a red warning light, a green “power on” light, push-to-test alarm button, and a horn silence switch. Outdoor Alarm Features: NEMA 4X thermoplastic alarm panel. Horn and light warn of high or low liquid levels. Panel exterior feature a large, red light specially designed noncorrosive horn, silence switch and alarm test switch.