50pcs. RFID Transponder. Operating frequency 13.56 MHz. Conforms to ISO 15693. 64 bit Fixcode. Degree of protection IP68. Readable and writable from both sides. 2528 bit memory available. Screw-shaped read/write tag. Easy mounting via M8 thread. Increased noise immunity 100 V/m. Up to SIL 3 acc. to IEC/EN 61508