Edwards Signaling 439DEX-10AW Bell, 10” Hazardous, 24VDC, Gray SF 23/12 Provide independent output circuit supervision

Provide independent output circuit supervision so in the event of a NAC fault they can notify the attached FACP

Reliable 433 MHz and 868 MHz technology

providing a clear visual indication

VFR800A Interceptor ABS 2002-2019

Edwards Signaling 439DEX-10AW Bell, 10” Hazardous, 24VDC, Gray SF 23/12 Provide independent output circuit supervisionEdwards 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.