Prox Card Calculator

A PROX card (Proximity Card) is a type of access control card that uses radio frequency identification (RFID) technology to grant access to secure areas. This calculator helps determine the appropriate value for a PROX card based on its specifications and usage requirements.

What is a PROX card?

A PROX card is a proximity card that uses low-frequency RFID technology to enable contactless access to secure areas. These cards are commonly used in buildings, offices, and other secure locations to control access to specific rooms or zones.

The PROX card system typically consists of a card reader, a control panel, and the PROX cards themselves. When a user presents their PROX card to a reader, the reader sends a signal that the card responds to, allowing or denying access based on the card's programmed information.

Key Features of PROX Cards

Low-frequency RFID technology (125 kHz or 134 kHz)
Contactless operation (no need to insert or swipe)
Programmable access levels and time restrictions
Durable plastic or metal card construction
Tamper-resistant design to prevent unauthorized programming

PROX cards are widely used in various industries including government buildings, corporate offices, schools, and healthcare facilities. They provide a convenient and secure method for controlling access to restricted areas.

How to use this calculator

This PROX card calculator helps determine the appropriate value for a PROX card based on its specifications and usage requirements. Follow these steps to use the calculator:

Enter the card thickness in millimeters
Select the card material from the dropdown menu
Enter the number of cards needed
Click the "Calculate" button to get the result

The calculator will display the total value of the PROX cards based on the inputs provided. You can also view a breakdown of the calculation and see how the result is derived.

Formula used

The value of a PROX card is calculated using the following formula:

PROX Card Value Calculation

Value = (Base Price × Material Factor × Thickness Factor) × Quantity

Where:

Base Price = $5.00 (standard price per card)
Material Factor = 1.0 for plastic, 1.5 for metal
Thickness Factor = 1.0 for standard thickness, 1.2 for thicker cards
Quantity = Number of cards needed

This formula takes into account the base price of the card, the material used, the thickness of the card, and the quantity needed. The material and thickness factors adjust the base price to reflect the cost differences between different types of PROX cards.

Worked example

Let's walk through a practical example to demonstrate how the PROX card calculator works.

Example Calculation

Suppose you need to order 50 PROX cards with the following specifications:

Card thickness: 0.8 mm
Card material: Metal
Quantity: 50

Using the formula:

Base Price = $5.00
Material Factor = 1.5 (for metal)
Thickness Factor = 1.0 (standard thickness)
Quantity = 50

Calculation:

Value = ($5.00 × 1.5 × 1.0) × 50 = $75.00 × 50 = $3,750.00

The total value of the 50 metal PROX cards with 0.8 mm thickness would be $3,750.00.

Interpreting the Result

The calculated value represents the total cost for the specified number of PROX cards. This information can help in budgeting and procurement decisions for access control systems.

Frequently Asked Questions

What is the difference between a PROX card and other access control cards?: A PROX card uses low-frequency RFID technology, which has a longer read range compared to high-frequency cards. This makes PROX cards suitable for applications where the card needs to be read from a greater distance.
Can PROX cards be reprogrammed after they are issued?: Most PROX cards are designed to be tamper-resistant to prevent unauthorized reprogramming. However, some systems allow for limited reprogramming capabilities for authorized personnel.
What is the typical lifespan of a PROX card?: The lifespan of a PROX card depends on usage and environmental conditions. Under normal conditions, a PROX card can last several years before requiring replacement.
Are PROX cards compatible with all access control systems?: PROX cards are generally compatible with most access control systems that support low-frequency RFID technology. However, it's important to check the compatibility with your specific system.
How do I know if a PROX card is still valid?: PROX cards typically have an expiration date or can be deactivated by the system administrator. You should check with your facility manager or the access control system for the current status of your card.