Could read and copy TM card and 125khz rfid cards at the same time.Can read to copy TM()smart card,item of chips:TM1990A,RW1990,TM01(only could be copy one time)Can read to copy 125khz rfid ID card,item of chips:EM4100,T5577,EM4305.working voltage:put 9V battery packed cellorlink with USB data cablewith computer to supply power.(9V Battery not include)2-in-1 TM iButton Copier & 125Khz RFID Reader Writer(no include battery)1) It can copy all the TM card,such as Access Card,District Card,Parking Card and so on.2) It is easy to operate, convenient , and just need three seconds to copy successfully.3) Small size, with buckle, easy to carry, use batteries.4) Could with 9V battery supplied (9V battery NOT included)5) USB cable(connect to PC for power input)Operation instruction:, turn on the switch at the side, putcard Aon the reader.One sound later,the indicator lights blue,then put thecopy cardon the reader,put away the card after one sound, then thecopy cardwill successfully changed intocard A(has 2 reader, TM card reader and ID card area).If you want to copy more than onecard A,put all copy cardscontinuouslyon the reader. When you want to copy intocard B, you should restart the machine,that is,turn off and then turn on again, the following proceduce is the same as stated above.(not support read write card A and card B at the same time)Note:This ibutton copier have been updated to V3 version.NOT support write copy encrypted cards! cannot read and write for HID card!Not work for TEMIC type cards!Type:A:RW1900 TM keysColour:WhiteMaterial:ABSPackage Contents:1 * RFID Copier1 * USB cable5 * RW1900 TM keys(Color is random, no specification is accepted)Only the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.