Edwards Signaling 439D-6AW-R SF 25/11 A short circuit causes the

A short circuit causes the module to inhibit the activation of the audible/visual signal circuit so the riser is not connected to the wiring fault

The Edwards 1800707 is a replacement smoke detector base designed for use with Edwards and EST fire alarm systems

When the detector senses that its sensitivity has drifted outside the UL listed sensitivity window the LEDs will flash Red every 3 seconds

catalog numbers 878DEX-N5 and 879DEX-G1

Environmental Sensors

Edwards Signaling 439D-6AW-R SF 25/11 A short circuit causes theEdwards Fire Alarm Bells are specially designed for fire alarm applications. The gongs are made of selected alloy steel to give the loud, resonant tones necessary in fire alarm systems. Two gong sizes are available to overcome different ambient noise level. The Fire Alarm Bells are of the underdome type with heavy duty mechanisms. Each bell is supplied with a mounting plate that fits any standard single gang opening (see Installation Data). For