Bosch FNM-420U-B-RD Uninterruptible Analog Addressable Outdoor Siren, Red

This outdoor siren in uninterruptible version continues to give alarm even when the line is run as a stub. The internal 2.6 Ah capacity battery allows the device to continue its alarm signal with its own power. With IP66 housing and -25 to 70 °C operating range, it is installed at unprotected locations such as building facades, parking lot entrances, and soffit areas. Its consumption below 4.35 mA allows numerous sirens to be connected to the loop without requiring additional power supplies.