The WERMA Blitz-Sirene 43901068 is a robust combination of optical and acoustic signaling device, specifically designed for industrial applications. It features 32 different tones, which can be selected according to the application, and allows for application-specific volume control up to 105 dB(A) at a distance of 1 m. The separate control of light and sound signals enables two-stage signaling, with two tones externally controllable – ideal for complex warning and alarm concepts in production environments. The device is designed for wall mounting and offers high reliability thanks to IP66 protection rating, enabling dust- and water-tight operation even outdoors.

The optical signal is based on a xenon light source with flashing function (1 Hz, 2 J) and a lifespan of up to 50,000 hours, while the acoustic signal has a lifespan of at least 5,000 hours. The operating voltage range is 115–230 V AC, with a nominal voltage of 230 VAC. Connections are made via screw terminals, supplemented by a cable gland for secure cable entry. The housing is finished in red/red (housing and dome color) and measures 138 × 136 × 119 mm, with a product weight of 442 g. Protection Class 2 and insulation values (Ui = 250 V / Uimp = 2,500 V) ensure safe operation in electrically demanding environments.

Technical Data

• Manufacturer's Part Number: 43901068
• Product Name: Blitz-Sirene WM 32 Tones 115-230VAC RD/RD
• Mounting Type: Wall mounting
• Housing Color: Red
• Dome Color: Red
• Protection Rating: IP66
• Connection: Screw terminal
• Cable Entry: Cable gland
• Dimensions L x W x H: 138.00 x 136.00 x 119.00 mm
• Weight: 442.00 g
• Operating Voltage: 115–230 V
• Voltage Type: AC
• Voltage Frequency: 50 Hz at 230 V; 60 Hz at 115 V
• Voltage Tolerance: +/- 10 %
• Rated Operating Voltage: 230 VAC
• Rated Operating Current: 30.00 mA
• Rated Inrush Current: < 1 A
• Protection Class: Class 2
• Insulation Voltage: Ui = 250 V / Uimp = 2,500 V
• Light Source: Xenon
• Light Pattern: Flash
• Flash Frequency: 1 Hz
• Flash Power: 2 J
• Sound Level (max) at 1 m distance: 105.0 dB(A)
• Acoustic Signal Pattern: Multi-tone
• Number of Tones: 32 tones
• Optical Lifespan: max. 50,000 h
• Acoustic Lifespan: min. 5,000 h