Tank Alert alarms provide audio/visual warning of potential threatening liquid level conditions. The Tank Alert XT indoor/outdoor alarm system provides audio/visual warning of potential threatening liquid level conditions in lift pump chambers, sump pump basins, holding tanks, sewage, agricultural and other non-potable water applications. If an alarm condition occurs, the horn sounds and red alarm beacon activates. The horn can be turned off, but the alarm beacon remains on until the condition is remedied. Once the condition is cleared the alarm will automatically reset. Specifications VOLTAGE: 120 VAC, 50/60 Hz, 7 watts max. (alarm condition) ALARM ENCLOSURE: 16.51 x 11.43 x 7.62 cm (6.5 x 4.5 x 3.0 inches), indoor/outdoor weatherproof thermoplastic which meets Type 3R water-tight standard ALARM HORN: 85 decibles at 3 meters (10 feet) meets Type 3R water-tight standard as installed by factory ALARM BEACON: Meets Type 3R water-tight standard as installed by factory TEST/SILENCE SWITCH: Certified to IP66 and IP68 standards AUXILIARY ALARM CONTACTS (Optional): 120 VAC. 5 amps max., 50/60 Hz PRE-MOUNTED TERMINAL BLOCK (Optional): 20 amps, 120/230 VAC POWER CORD (Optional): 1.8 meter (6 foot) cord with 120 VAC plug FLOAT SWITCH: Sensor Float control switch with mounting clamp Cable: 4.57 meters (15 feet), flexible 18 gauge, 2 conductor (UL) SJOW, water-resistant (CPE) Float: 8.58 cm diameter x 11.56 cm long (3.38 inches x 4.55 inches), high impact, corrosion resistant PVC housing for use in sewage and water up to 60oC (140oF) Switch: Hermetically sealed steel capsule features mercury-to-mercury contacts Maximum line impedance for initiating devide: 100 ohms