Silent Knight EVS-INT50W Amplifier, Internal, 50W, One Speaker SF 05/03 The T7351 consists of a

The T7351 consists of a thermostat and subbase

The SB4U is designed to add an audible output function to compatible detectors

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Silent Knight EVS-INT50W Amplifier, Internal, 50W, One Speaker SF 05/03 The T7351 consists of aThe EVS INT50W is capable of producing 50 watts of audio power on one speaker circuit. It is designed to conveniently mount in the 5820XL EVS cabinet, making it an ideal solution for small voice evacuation installations. The EVS INT50W is powered and supervised from the 5820XL EVS, eliminating the need for an additional AC source and battery backup