Overview
The Werma 645 820 75 siren element is a compact acoustic signaling component designed for industrial alert and notification applications. This 8-tone siren delivers reliable audible alarms in factory, warehouse, and control room environments. Built to withstand harsh conditions with IP65 enclosure rating and UL Type 12 certification, the Werma 645 820 75 integrates seamlessly with KombiSIGN 71 and KombiSIGN 72 modular signal tower systems.
Key Features
- 8 programmable tone selections via DIP switch
- 24V AC/DC dual voltage operation
- IP65 protection rating for washdown and dusty environments
- UL Type 12 certification
- Compact 40 mm diameter × 68 mm height form factor
- Fits KombiSIGN modular signal tower platforms
Technical Specifications
- Operating Voltage: 24V AC/DC ±10%
- Frequency: 50 Hz
- Tone Options: 8 selectable tones (DIP switch adjustable)
- Protection Rating: IP65 / UL Type 12
- Operating Temperature: -20°C to +50°C
- Diameter: 40 mm
- Height: 68 mm
- Housing Material: Polycarbonate (black)
- Weight: 74 g (product weight)
- Manufacturer: WERMA Signaltechnik GmbH
- Part Number Format: 645.820.75 / 645-820-75 / 64582075
Typical Applications
- Manufacturing facility audible alarms and notifications
- Emergency signal towers and visual/audible beacon systems
- Control room and machine operator warning systems
- Hazardous location alert signaling (where Type 12 rated)
- Production line status indication with modular signal stacks
- Warehouse and material handling facility notifications
Compatibility & Replacements
Compatible With
- KombiSIGN 71 modular signal tower
- KombiSIGN 72 modular signal tower
- WERMA 24V DC/AC control systems
- Industrial PLCs and relay logic circuits
- 24V industrial control power supplies
Replaces / Drop-In Replacement For
- Werma 645 820 75 (all revision levels)
- Verify compatibility with your system integrator before ordering for legacy installations.
Works With
- 24V AC/DC industrial control circuits
- KombiSIGN modular signal tower platforms
- WERMA connection elements and mounting hardware
- Standard DIN-mount automation panel installations
- IP65 / washdown-rated signaling applications
