SN/SEHN SERIES SN Type: 15 Built-in Sounds (Max. 105dB at 1m), 5 User-Defined Voices (Max. 95dB at 1m) Voltage: DC:12V,24V AC:110V,220V Dimension (mm): Horn Diameter: Ø119 Length: 167 Materials: Housing-Steel Protection rating: IP55 SN-1 Type: 1 Built-in Sounds (Max. 100dB at 1m) Voltage: DC:12V,24V Dimension (mm): Horn Diameter: Ø135 Length: 140 Materials: Housing-Steel Protection rating: IP55 SEHN25 Type: 15 Built-in Sounds (Max. 115dB at 1m), 5 User-Defined Voices (Max. 108dB at 1m) Voltage: DC:12V,24V AC:110V,220V Dimension (mm): Horn Diameter: Ø158 Length: 238 Materials: Housing-Steel Protection rating: IP55 SEHN50 Type: 15 Built-in Sounds (Max. 120dB at 1m), 5 User-Defined Voices (Max. 115dB at 1m) Voltage: DC:12V,24V AC:110V,220V Dimension (mm): Horn Diameter: Ø167 Length: 242 Materials: Housing-Steel Protection rating: IP55