Optical-acoustic fire alarm panel, VAD category W. Optical coverage W-4.6-9.1. Panel with the words “FIRE ALARM”. Interchangeable signaling film. Sound pressure 92dB(A) @ 1m. Surface or semi-flush mounting on box type 503. Power supply voltage 24V DC. Maximum consumption in 50mA signal. Protection rating IP21C. Operating temperature -10°C...+55°C. ABS casing. White colour. Semi-flush mounting. Dimensions (L x H x D) 292 x 130 x 14mm. Approved EN 54-3 - EN 54-23. Certification: 1328-CPR-0427.