The Werma 645.890.75 is a compact and highly adaptable 8-tone siren element engineered for use with Werma’s KombiSIGN 71 and 72 modular signal tower systems. Powered by either 24 VAC or 24 VDC, it provides flexible integration into both AC and DC low-voltage control circuits—making it ideal for factory automation, machinery status monitoring, or process safety signaling. This acoustic module delivers a powerful output of up to 102 dB (A) at 1 meter. Eight distinct alarm tones can be selected via internal DIP switches to match a wide variety of application needs—from warnings and faults to start-up tones or evacuation alerts. The volume level can also be adjusted internally between 92 and 102 dB (A) to suit your environment. Its rugged black housing features an IP65 ingress protection rating, ensuring reliability in dusty, damp, or vibration-prone industrial environments. The unit’s quick bayonet-lock design allows for easy tool-free installation into KombiSIGN towers, streamlining both commissioning and maintenance. Key Features: • 8 configurable alarm tones via DIP switch • Dual-voltage support: 24 VAC or 24 VDC • Adjustable sound pressure level: 92–102 dB (A) • Compact, black IP65-rated housing for industrial use • Fast integration with KombiSIGN 71 and 72 towers • Simple volume adjustment with internal switch • Ideal for low-voltage safety alarms, process notifications, and machinery alerts