Group naming tag, clicks into terminal centre for screw-in, spring cage and quick lock terminals Order no.: < 661-8868') 661-8868/ mark with a 25 x 12 mm label, or manually with a B PEN (order no.: < 101-2925') 101-2925 , Zack strip on the base part Order no.: < 661-8862') 661-8862/ label with 26 x 6 mm insert strips (order no.: < 662-2978') 662-2978 , Zack strip on the base part, length: 29 mm Fire protection rating in accordance with UL 94 V2 Ambient temperature (operating) -40 → +100 °C Content materials silicon and halogen-free