3-tone gong, series A, mocha (complete with support ring, screw fastening) 2 separate inputs for 2-/3-tones Supply voltage: 8 ... 12 V AC or 8 ... 24 V DC, via external power supply (SELV) e.g. item no. NT 2405 VDC or NT 2415 REG VDC Current consumption: approx. 150 mA
