Conventional and Addressable Accessories Hazardous Location Signals 870EX Series Two mounting brackets are provided on either side of the unit for wall mounting. Features and Specifications • Diode polarized • Red corrosion resistant heat flowed epoxy finish • Low current drain • Wide operating voltage range -20% to +10% of nominal voltage • Power connection wires embedded in sealing compound • L listed for Class 1, Div. 1 and 2, Groups B, C U and D; Class II, Div. 1 and 2, Groups E, F and G; Class III locations • perating temperature range: 25ºF to 104ºF O (4ºC to 40ºC) Ordering Information Operating Voltage Hazardous Location, Horn Diode Polarized 110ft. dB measurements per UL 464 in a reverberant room. Anechoic dB measurements are typically higher. Approx. Shipping Weight (lb.) Mark mounting holes (2) Mounting brackets for 3/8" (10mm) diameter maximum fasteners Explosion-proof conduit outlet box (not supplied) FIRE ALARMS The Edwards 870EX Series are diode polarized, heavy-duty, high decibel, vibrating horn signals. They are intended for use in indoor hazardous locations requiring electrical supervision of signaling circuit field wiring, including fire alarm systems. May also be used for unsupervised signaling applications.