Inim IS0120RE Acoustic and visual alarm indicator approved according new EN54-23 standard, IP65 protection rated (deep base version only),97 dB(A) @ 1 m. Operating voltage from 17 to 60 Vdc, mounting base included. Selectable tone among 32 available by means of DIP SWITCH, flashing frequency selectable at 0,5Hz / 1Hz (by means of DIP SWITCH), 2 selectable sound level. Current consumption: 25/45 mA (flashing @ 0,5/1 Hz ).