This RFID device reads RFID tags running in the 13.56 Mhz band. Each tag has its own unique identification number, which is sent through 1-wire bus by emulating a DS1990A iButton.
Features
- reads RFID tags running in the 13.56 MHz band
- data are sent by emulating a DS1990 iButton
- plastic casing
- standard wire ~40 cm
- M*12 thread
- bi-color LED
- internal buzzer
- joining colors green and red we get orange
- no series resistor required, simply connect LED cathode to GND
- low-cost
Programming
Supported 1-wire commands:
- 33h (Read Rom)
- F0h (Search Rom)
The emulated 64-Bit ROM consists of:
- CRC (1 Byte)
- RFID Serial number (6 Bytes)
- Family Code DS1990 (0x01)
The reader sends zero (00h) on identification numbers that are less than 6 bytes long. Numbers longer than 6 bytes are truncated to the 6 least significant bytes (LSB).
Applications
- Cash registers
- Time and attendance
- Access control
Pinouts
| Yellow | Power supply (20-30 V DC) |
| Black | Ground |
| White | 1-Wire Data |
| Green | Cathode green LED |
| Red | Cathode red LED |
| Blue | Buzzer |
RF9092Lv-Mw-xy-z
v = number of LEDs (0 = no LED)
w = LED with common Anode (A) or Cathode (K)
x = thread in millimeter (0 = no thread)
y = frequency
z = advanced feature (e.g. water resistant, buzzer)
