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The Edwards EST 5251FB is an intelligent Heat Detector
Input/Output Modules provide the following modes of operation:
the CC2A connects the output circuit to the riser 1 bus or the riser 2 bus
The System Sensor 2251TB is an Intelligent Addressable Photoelectric Smoke Sensor w/ Thermal (135°F / 57
Two-wire SLC loop connection
Johnson Controls M301MJ Addressable Mini Monitor Module FCI M500X The Edwards EST 5251FB isJohnson Controls M301MJ is a miniature monitor module that supervises a Style B (Class B) circuit of dry contact input devices. The M301MJ is intended for use in intelligent, two wire systems where the individual address of each module is selected using rotary switches. It provides a two wire initiating device circuit for normally open contact fire alarm and security devices.
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