Busch warning device insert, security technology, Busch Infoline, Busch warning device insert red For optical and acoustic alarm signaling. Signaling type (call/alarm call, according to DIN0834) can be selected via internal jumper. Typ. 70 dB at a distance of 1 m. Acoustic signaling can be deactivated via internal jumper. Alarm activated by applying the operating voltage. Maintenance-free thanks to the use of LEDs. Nominal frequency: 50 Hz Protection class device: SELV Temperature range device: 5 °C to 40 °C
