The simple design of the flush-mounted gong, bell and buzzer series blends inconspicuously with numerous products from well-known switch manufacturers. Simply integrate flexibly on site.Product features:Flush-mounted bell Small bell including mounting plate and frameTechnical specifications:Gong volume up to 83 dB (A) @1m LTW / SU volume up to 80 dB (A) @1m230V AC, 50Hz / 0.045A Dimensions: Gong: 50 x 50 x 43 mm Frame: 80 x 80 x 11mm Color: whiteInstallation note:Installation in flush-mounted boxNote:Recommendation: Use switch junction boxes (depth 60mm) Fits in surface programs from switch manufacturers with 50 mm internal dimensions. The switch manufacturer's frames may need to be modified.