Bosch FNM-420U-A-BSWH Uninterruptible Analog Addressable Base Siren, White, Without Cover

This siren in detector base form is positioned beneath the detector, eliminating the need to hang a separate warning unit. Its uninterruptible operation ensures sound continues even when the line terminates as a stub; it produces output up to 93.1 dB(A). The white housing is delivered without cover, so it is planned together with the detector to be mounted on top. Since only a single hole and single cable route are required in the ceiling, suspended ceiling installation time is shortened.