The Siemens SIRIUS green flashlight element has diameter 50 mm. It has integrated flashing light electronics hence additional filament lamp or LED is not required. It operates on 24 V AC/DC.
Modules that can be flexibly combined: Can be stacked up to 4 high (for 8WD42) Simple connection and fast lamp change using a mechanically and electrically secure and vibration-proof bayonet catch Communications-capable via an AS-Interface connection LEDs with an exceptionally long life Extremely resistant to shock and vibration Customizable options: continuous, blinking and flashing light, buzzers, sirens and LED elements