Alarm Current: 8 mA @ 12 VDC / 20mA @ 24 VDC Class: Tip (Inside) Sound Level: @ 90 VD / m (A-Band) @ 12 VDC / 100 dB / m (A-Band) @ 24 VDC / Protection Class: IP21C Enclosure material: ABS-FR Working Temperature: (-10 ° C) - (55 ° C) Relative Humidity (Max): 95% Weight: 120 gr Dimensions: Ø: 90 mm, s: 65 mm Standard: EN54-3