This part is a kind of semiconductor called RDM630.

Function of this product has RDM630.

Manufacturers : ETC

Image and pinout :

Some of the text within the PDF file :

RDM630 Specification 1 Pin Definition P1 ． ： （WEIGAND） ： DATA0 DATA1 2. Pin definition （TTL interface RS232 data format） ： P1： PIN1 PIN2 PIN3 TX RX PIN1 PIN2 PIN3 PIN4 PIN5 GND +5V(DC) PIN4 PIN5 GND +5V(DC) P2: PIN1 PIN2 ANT1 ANT2 P2: PIN1 PIN2 ANT1 ANT2 P3: PIN1 PIN2 PIN3 LED +5V(DC) GND P3: PIN1 PIN2 PIN3 LED +5V(DC) GND Specification and Parameter Frequency 125KHz Baud Rate 9600 TTL Electricity Level RS232 format interface Weigang26 Or TTL Electricity Level RS232 format ： （ ） Power supply Current Operating range Expand port Indication light Working temperature Storage temperature Max. humidity Size I/O DC 5V < 50Ma （±5%） ＞50mm（Depend on Card/Tag shape, manufacturer） N/A N/A -10 -20 ℃ ~ +70℃ ℃ ~ +80℃ × × Relative humidi [ ... ]

RDM630 PDF Datasheet Download