Reliable PerformanceThe SSM and SSV series provide loud resonant tones. The SSM series operate on 24VDC and are motor driven, while the SSV series operate on 120VAC utilizing a vibrating mechanism.Simplified InstallationFor indoor use, the SSM and SSV series mount to a standard 4 inch square electrical box. For outdoor applications, weatherproof back box, model number WBB, is used. Also known as -System Sensor By Honeywell-Us SYS SNSR 6 24VDC BELL - BK-SSM246
