System Sensor 5151 Combination Heat DetectorThe System Sensor 5151 is a combination fixed and rate of rise, plug in heat detector. The detector initiates an alarm in response to both rapid rate of rise conditions (increases in excess of 15F per minute) and fixed heat (135F). COMPATIBLE BASES B110LP 2 wire, 12 24VDC B110RLP 2 wire, 24VDC B112LP 4 wire Form A&C Contacts, 24VDC B114LP 4 wire Form A&C + A Supervisory Contacts, 120VAC B116LP 2 wire* Form C Contacts, 24VDC B401 Flangeless 2 wire, 12
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