| Order Codes | 
| RFK510 |   |   |   |   | UMD RFK510X Series RFID Keyring/Keyfobs, ABS Plastic | 
|   | Style | 
|   | 2 |   |   |   | Style 02 | 
|   | 4 |   |   |   | Style 04 | 
|   | 5 |   |   |   | Style 05 | 
|   | 6 |   |   |   | Style 06 | 
|   |   | RFID | 
|   |   | H |   |   | High Frequency, 13.56Mhz | 
|   |   | L |   |   | Low Frequency, 125Khz | 
|   |   |   | RFID Chip Option | 
|   |   |   | -NM1 |   | HF - NXP Mifare S50 with 32 bit UID and 1KB memory | 
|   |   |   | -TK4 |   | LF - TK4100 LF Chip with 40 bit UID | 
|   |   |   |   | Colour | 
|   |   |   |   | -BLK | Black | 
|   |   |   |   | -BLU | Bluek | 
|   |   |   |   | -RED | Red | 
|   |   |   |   | -Yel | Yellow | 
|   |   |   |   | -GRN | Green |