Features:Interface:UARTRich application supportSupport 125KHz card readingIt supports various cards card reading operation7941E card reader module, integrated high performance card reading radio frequency circuit and antenna Specifications:Voltage:DC 5VCurrent:40mAfor D1 D0:data output DATA1,DATA0FOR:NCOperating Temperature:-20~70 CelsiusEM4100 Card Reading Distance:>8cmInterface Output Introduction:UART Interface OutputUART Interface OutputData HeadLengthCard TypeCard TypeBCC CheckData End0x020x090x01SN0~SN3XOR Check Except Data for Head And Data End0x03Card Type:0x02 EM41000x01 for MIFARE 1K0x03 for MIFARE 4K0x10 for HID Card0x11 T55670x20 2nd Card0x21 ISO14443B0x22 FELICA0x30 15693 Label0x50 CPU Card0x51 Sector Information0xFF Keyboard DataFor example:the data received by serial port tool is 02 0A 02 2E 00 B6 D7 B5 F2 03, thenThe first byte 0x02 means data startThe second byte 0x0A means the whole data length is 10 bytes, which includes data start and data endThe third byte 0x02 means the card type is EM4100The fourth to eighth byte (0x2E 0x00 0xB6 0xD7 0xB5) means the read card number, and the fourth byte 0x2E is hidden card numberThe ninth byte 0xF2 means BCC check of second byte to eighth byteThe tenth byte 0x03 means data endNotice:Keep away from interference source, and strong interference signal may affect card readingSelect linearity power can improve the card reading distance and effect; switch power may attenuate the distance but will not influence normal operationThe module can operate normally in the range of 3-5V, please do not use higher voltageThis module has high frequency signal, so it may cause some interference to the analog circuit. Uses should place the module a little far away from the buzzer; if the distance is too close, the sound of the buzzer will be lowApplications:Attendance Fingerprint Read Write ModuleEntrance Guard Intercom Read Write ModuleReplicatorAttendance fingerprint card reader moduleEntrance guard intercom card reader moduleSize:4.7x2.6cm/1.85x1.02inch Note:Please allow 1-3mm error due to manual measurement.pls make sure you do not mind before you bid.Due to the difference between different monitors,the picture may not reflect the actual color of the item.Thank you Package Includes:1x EM4100 8CM RFID Reader Wireless Module1x Cable