1. Genuine Door King Product
2. Sold in packs of 50
3. Factory Pre-coded

The Doorking 1508-252 is a proximity access card, specifically a pre-coded, 26-bit Wiegand format card compatible only with DoorKing ProxPlus Secure Mifare card readers.

1. Function: Grants access to authorized individuals through compatible card readers.
2. Technology: Utilizes RFID (Radio-Frequency Identification) for contactless communication with the reader.
3. Compatibility: Works only with DoorKing ProxPlus Secure Mifare readers, not universal.
4. Pre-coded: Comes with a unique identification number programmed during manufacturing.
5. Format: Wiegand 26-bit, a common format for transmitting ID data to access control systems.
6. Read Range: Limited to roughly 1 inch, requiring close proximity to the reader for activation.
7. Construction: Made from durable materials for long-lasting use.

Overall, the Doorking 1508-252 is a simple and secure access control card for specific DoorKing systems, offering convenience and contactless entry within its limited range.