Description Operating voltage 9 - 30 V DC Max. current consumption FNM-320-SRD/-SWH/-FRD/-FWH 33 mA FNM-320LED-SRD 36 mA Monitoring Reverse polarity Dimensions (W x H) FNM-320-FRD/-FWH Ø 93 x 63 mm FNM-320-SRD/-SWH Ø 93 x 91 mm FNM-320LED-SRD Ø 93 x 107 mm Weight FNM-320-SRD/-SWH/-FRD/-FWH 250 g FNM-320LED-SRD 300 g Housing material ABS V0, PC Color Red, RAL 3001 White, RAL 9010 Permissible operating temperature FNM-320-SRD/-SWH/-FRD/-FWH -25 - 70 °C FNM-320LED-SRD -10 - 55 °C Permissible rel. humidity EN 54-3 Protection class as per EN 60529 FNM-320-FRD/-FWH IP 54 * FNM-320-SRD/-SWH IP 65 * FNM-320LED-SRD IP 65 * Max. sound pressure At 12 V 105± 3 dB(A) At 24 V 112± 3 dB(A) FNM-320LED-SRD Light output > 0.5 cd Flash rate 1 Hz