Series 328Operating principle Reflection principleOperating range 0.02 ... 4.5 m, With reflector TK(S) 100x100Operating range limit 0.02 ... 6 m, With reflector TK(S) 100x100Light source LED, RedProtective circuit Polarity reversal protectionShort circuit protectedSupply voltage UB 10 ... 30 V, DC, Incl. residual rippleResidual ripple 0 ... 15 %, From UB