User selectable 55 tone capability - No additional tone modules needed
Output up to 120dB @ 1m (110dB @ 10ft.)
utput up to 123dB @ 1m (113dB @ 10ft.) (5530MHV Series)
Captive components
RS485 models supervised
Diode polarized for supervisory circuits (5530MD-24AW)
Speaker can be rotated and locked in any horizontal direction
24V DC battery backup terminals provided
NEMA Type 3R
UL listed for Class 1, Div. 2, Groups A, B, C and D; Class II, Div. 2, Groups F and G; Class III hazardous locations