Conventional and Addressable Accessories Hazardous Location Signals 439DEX Series Edwards 439DEX Series hazardous location fire alarm bells are DC vibrating bells that produce a long, continuous ringing sound. The striker continues to strike the gong in rapid-fire as long as current is applied. Diode polarized models are available for use in electrically supervised circuits. FIRE ALARMS 6", 8" and 10" gong sizes Completely assembled Suitable for use in indoor applications Corrosion resistant gray epoxy finish Mounts directly on any solid surface Low power draw for efficient operation over long runs A djustment free self-compensating solenoid plunger • ire leads and sealing fitting for connection W to 3/4" conduit • L listed for Class I, Divisions 1 and 2, U Groups B, C and D; Class II, Divisions 1 and 2, Groups E, F and G; Class III Operating Voltage Gong Size Weights and Dimensions Dimensions Approx. Shipping Weight (lb.) Gong Size Mounts to any solid surface using 3/8" (10mm) fasteners. Units fitted with a sealing fitting for 3/4" (19mm) conduit and wire leads for power connections. 1 1/4" (32mm) Mounting hole positions for 3/8" (10mm) diameter (max) fasteners with washers Mounting Brackets