Edwards 740 and 744 bells with an exposed gong are non-adjustable, and are suitable for use in residential, commercial and OEM applications. They may be operated off of a 591 or 592 transformer or DC power. They are also suitable for AC powered security systems with battery standby.
Also known as
- Commercial Fire Systems: Edwards Signaling Safety Supplies General Purpose Vibra
- Edwards 744 Nubel General Purpose Vibrating Bell 4.000 Inch 6 - 8 Volt AC/3 - 6
- Edwards, 744, NUBEL, Exposed 4 Gong, Low voltage, General Purpose Bells, 3-6 VDC