Note 1. this duplicator only can copy 125KHz RFID cards/tags 2.cards/tags not included 3.batteries not included 4.Not supporting 13.56MHz frequency 5. Writing to TK/EM4100 and 4200 is NOT supported, Only TK/EM4100 and 4200 can be read RFID Reader Duplicator 125khz 1. Handheld shape design, comfortable hand feeling and high quality. 2. 2 buttons for simple operations. 3. Standalone operation, no need to connect with computer / PC, easy to use. 4. Built-in individual LED lights and buzzer indicator. 5. Reading distance is 0 - 6cm. 6. Can only copy 125KHz RFID card, Compatible with T5577, CET5200, EM4305 and EN4305. Parameter Read: EM / TK (EM4100 TK4100 etc) cards or keys Write: EM4305 CET5557 T5577 5200 EM4205 etc cards or Keys Built-in: individual LED lights and buzzer indicator, transceiver antenna Connection: USB cable connection to PC (Plug and Play, Driverless for Windows 2000, 2003, XP,Windows7/ 8 / 10 etc) Power Supply: 3V (2 x AAA battery)(Batteries not included)) Times: Read / Write > 20000 times Size: ( L/W/H ): 115 x 70 x 30mm Weight: 85g How to use Read: Put the inductive proximity card (EM4100 or TK4100 or has inside info EM4305 or T5577) in the induction area and hold the read key (left one). The buzzer will sound emitted by the green indicator for success. If the power light is only blinking, then the card reader failed. Copy: After the reading is successful, put the blank card in the induction area and hold the copy key(right one). The buzzer sound emitted by the yellow indicator for success. If the power light is only blinking, then the card reader failed. Package included 1x duplicator (no batteries, no card/tag) Note: No retail box, but we will pack it very well. Q/A Q: The card is copied successfully and cannot be used normally. A: IC/ID cards with different chips and frequencies. For example, the access control system has a firewall or a special chip. It may be copied normally, but it cannot be used normally. You can confirm the type of access control card with the customer service first. Q: The ID card cannot be copied and read A: The ID card has various frequencies such as 125KHz/250KHz/350KHz/500KHz. The most common one in the market is 125KHz, so there is a situation where it cannot be written after reading. (Need to purchase ID cards with the same frequency) Q: The card expires after being used once. A: Usually, there is a firewall in the access control system, and the copy card is shielded, so that it can only be swiped once. It is recommended to buy a card that can penetrate the firewall to use. Q: The copy card is successful, but the original card is invalid. A: This situation is caused by the existence of a rolling code anti-duplication system in the access control system, which needs to be solved by using a machine that can copy rolling codes.