Harmony Harmony XVC1 LED Beacon Tower with Siren, 1 Light Elements, Red, 24 V dc. Light Effect: Flashing, Steady. Multifunction: Yes. Decibels at 1 Metre: 102dB. Mounting Style: Surface Mount. Height: 293mm. Base Diameter: 130mm. Connection Cable Length: 500mm. Connection Type: Cable. Maximum Temperature: +50°C. MPN: XVC1B1HK, Schneider Electric