The HID 1326 Prox Card II proximity cards are designed for use with access control systems utilizing the Wiegand protocol. These cards are a popular choice for their durability and reliability. Here are some key features and specifications for the HID 1326 Prox Card II: Key Features: Compatibility: Works with all HID proximity card readers. Size: Same size as a standard credit card (ISO standard), making it easy to carry in a wallet. Durability: Made from PVC material for long-lasting use. Frequency: Operates at 125 kHz. Security: Provides a unique, factory-programmed ID number for each card, ensuring secure access. Customizability: Can be custom printed with company logos or other information. Specifications: Dimensions: 2.125" x 3.375" x 0.033" (5.4 x 8.57 x 0.084 cm) Weight: Approximately 6.2 grams Read Range: Typically 2.5" to 20" (6.35 cm to 50.8 cm) depending on the reader Material: PVC laminate Operating Temperature: -50 to 160F (-45 to 70C) Memory: Contains an 85-bit or 37-bit unique ID code Programming Options: Available in various formats including standard 26-bit Wiegand Packaging: Sold in packs of 25 cards