125 kHz RFID UART reader module RDM6300

125Khz RFID Reader Module RDM6300 UART Output Access Control System for Arduino Features: Frequency: 125KHz Baud rate: 9600bps (TTL RS232 format) Working voltage: DC 5V (±5%) Relative humidity: 0-95% Working temperature: -10'C to +70'C Storage temperature: -20'Cto +80'C Wiring size: 46mm x 32mm x 3mm Module size: 38.5mm x 19mm x 9mm Supported card: EM/TK 4100, EM/TK4102, EM4200 or compatible Receiving range: 20-50mm (It depends on the antenna, card and the surroundings) Sample Code: String comdata = ""; Void setup () { PinMode (2, the OUTPUT); PinMode (3, the OUTPUT); DigitalWrite (2, HIGH); DigitalWrite (3, HIGH); Serial. The begin (9600); } Void loop () { DigitalWrite (2, HIGH); DigitalWrite (3, HIGH); While (Serial. The available () > 0) { Comdata + = char (Serial. The read ()); Delay (2); } If (comdata. Length () > 0 && comdata = = "0500 addf1443") { While (comdata. Length () > 0) { DigitalWrite (3, LOW); Delay (100); While (Serial. The available () > 0) { Comdata + = char (Serial. The read ()); Delay (2); } Comdata = ""; } } Else if (comdata length () > 0) { While (comdata. Length () > 0) { DigitalWrite (2, LOW); Delay (100); While (Serial. The available () > 0) { Comdata + = char (Serial. The read ()); Delay (2); } Comdata = ""; } } }