# HID 40bit Honeywell - (P10001)

Everything you need to understand HID 40bit Honeywell - (P10001)

## Card format Overview

A proprietary 40-bit card format used in access control systems, featuring a unique structure composed of 12-bit site code and 16-bit card number, allowing for easy management and avoiding card number duplication for secure, contactless access.

## HID 40bit Honeywell - (P10001) format properties

### Site Code

12 bits. The facility code range is 0 to 4,095.

### Card Number

16 bits. A unique serial number (0-65,535) for each card within that facility code.

### Generate examples

Put in the values for this card format, we'll generate the results in a few different formats.

### Here's your example

| Format  | Value                                                             |
|---------|-------------------------------------------------------------------|
| Hex     | 64006400<br>Copy                                                  |
| Decimal | 1677747200<br>Copy                                               |
| Binary  | 0000000001100100000000000110010000000000<br>Copy |

## The API that turns phones into key fobs.