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which require a low-frequency notification appliance that operates within the frequency range of 520 Hz ± 10% and is of a square wave tone
Apollo 55000-006APO XP95 Open-Area Sounder VID - White Body (Red Flash) - Isolating
The Transparent Hinged Cover is for use with XP95 and Discovery Manual Call Points and can be fitted to add further protection against accidental operation
System Sensor R-24E 4-Gang Relay
Potter PAD300-HD is a listed Analog Addressable Rate of Rise and/or Fixed Temperature Heat Detector compatible with any fire alarm control panel that has the Potter Addressable Device (PAD) protocol
Det-Tronics 000515-514 APOLLO HINGED COVER FOR SB-SPC8 which require a low-frequency notificationApollo Hinged Cover For