QWCD SERIES QWCD50 Type: LED Strobe Type 31 Built-in Sounds (Max. 123dB at 1m), 30 MP3 User-Defined Sounds (Max. 118dB at 1m) Voltage: DC:12V~24V AC:110V~220V Dimension (mm): □168×222 Depth: 163 Materials: Horn-PC Housing-ABS Protection rating: IP66 QWCD35 Type: LED Strobe Type 31 Built-in Sounds (Max. 115dB at 1m), 30 MP3 User-Defined Sounds (Max. 113dB at 1m) Voltage: DC:12V~24V AC:110V~220V Dimension (mm): □136×179 Depth: 126 Materials: Horn-PC Housing-ABS Protection rating: IP66