Skip to main content

What Your Controller Can Handle: A Capacity Overview

A quick reference to maximum cards, access groups, and other limits across controllers.

Written by Ankita Chakraborty

When designing or expanding an access control system, it’s essential to understand the capacity limits of each controller model. Every controller comes with defined boundaries—such as the maximum number of cardholders, access groups, schedules and event logs—that determine how far the system can scale.
​

This guide provides a clear comparison of controller specifications, helping system designers, installers, and administrators choose the right controller for their project. Use the table below as a quick reference to verify that your chosen hardware meets both current and future requirements.
​
​Note: The values shown in the table are the default limits for all Mercury controllers configured in Genea. These may vary for individual customers if any customization requests have been implemented. For more information or to request changes to controller capacities, please contact Genea Support.

Controller Model Number

Fixed Configuration

Maximum Access Group

Maximum Access Group per User

Maximum Card

MP 1501

  1. Card Format: 16

  2. Schedule + OTDS: 250 (5 reserved by Genea)

  3. Holiday: 255

  4. IO Rules + Emergency Plan + Global IO Rule (BE): 1014
    ​Note: IO Rule limit is shared across One Time Door Schedule, Emergency Plan, and Door Schedule

  5. Monitor Point Groups: 128

  6. Max Doors with Readers: 17

255
​
(expandable up to 32,000 ; may impact card limit)

32
​
(expandable up to 255 ; may impact card limit)

45103

MP 1502

  1. Card Format: 16

  2. Schedule + OTDS: 250 (5 reserved by Genea)

  3. Holiday: 255

  4. IO Rules + Emergency Plan + Global IO Rule (BE): 1014
    ​Note: IO Rule limit is shared across One Time Door Schedule, Emergency Plan, and Door Schedule

  5. Monitor Point Groups: 128

  6. Max Doors with Readers: 64

255
​
(expandable up to 32,000 ; may impact card limit)

32
​
(expandable up to 255 ; may impact card limit)

45103

MP 2500

  1. Card Format: 16

  2. Schedule + OTDS: 250 (5 reserved by Genea)

  3. Holiday: 255

  4. IO Rules + Emergency Plan + Global IO Rule (BE): 1014
    ​Note: IO Rule limit is shared across One Time Door Schedule, Emergency Plan, and Door Schedule

  5. Monitor Point Groups: 128

  6. Max Doors with Readers: 64

255
​
(expandable up to 32,000 ; may impact card limit)

32
​
(expandable up to 255 ; may impact card limit)

91706

MP 4502

  1. Card Format: 16

  2. Schedule + OTDS: 250 (5 reserved by Genea)

  3. Holiday: 255

  4. IO Rules + Emergency Plan + Global IO Rule (BE): 1014
    ​Note: IO Rule limit is shared across One Time Door Schedule, Emergency Plan, and Door Schedule

  5. Monitor Point Groups: 128

  6. Max Doors with Readers: 64

255
​
(expandable up to 32,000 ; may impact card limit)

32
​
(expandable up to 255 ; may impact card limit)

184913

LP 1501

  1. Card Format: 16

  2. Schedule + OTDS: 250 (5 reserved by Genea)

  3. Holiday: 255

  4. IO Rules + Emergency Plan + Global IO Rule (BE): 1014
    ​Note: IO Rule limit is shared across One Time Door Schedule, Emergency Plan, and Door Schedule

  5. Monitor Point Groups: 128

  6. Max Doors with Readers: 17

255
​
(expandable up to 32,000 ; may impact card limit)

32
​
(expandable up to 255 ; may impact card limit)

45103

LP 1502

  1. Card Format: 16

  2. Schedule + OTDS: 250 (5 reserved by Genea)

  3. Holiday: 255

  4. IO Rules + Emergency Plan + Global IO Rule (BE): 1014
    ​Note: IO Rule limit is shared across One Time Door Schedule, Emergency Plan, and Door Schedule

  5. Monitor Point Groups: 128

  6. Max Doors with Readers: 64

255
​
(expandable up to 32,000 ; may impact card limit)

32
​
(expandable up to 255 ; may impact card limit)

45103

LP 2500

  1. Card Format: 16

  2. Schedule + OTDS: 250 (5 reserved by Genea)

  3. Holiday: 255

  4. IO Rules + Emergency Plan + Global IO Rule (BE): 1014
    ​Note: IO Rule limit is shared across One Time Door Schedule, Emergency Plan, and Door Schedule

  5. Monitor Point Groups: 128

  6. Max Doors with Readers: 64

255
​
(expandable up to 32,000 ; may impact card limit)

32
​
(expandable up to 255 ; may impact card limit)

91706

LP 4502

  1. Card Format: 16

  2. Schedule + OTDS: 250 (5 reserved by Genea)

  3. Holiday: 255

  4. IO Rules + Emergency Plan + Global IO Rule (BE): 1014
    ​Note: IO Rule limit is shared across One Time Door Schedule, Emergency Plan, and Door Schedule

  5. Monitor Point Groups: 128

  6. Max Doors with Readers: 64

255
​
(expandable up to 32,000 ; may impact card limit)

32
​
(expandable up to 255 ; may impact card limit)

184913

EP 1501

  1. Card Format: 16

  2. Schedule + OTDS: 250 (5 reserved by Genea)

  3. Holiday: 255

  4. IO Rules + Emergency Plan + Global IO Rule (BE): 1014
    ​Note: IO Rule limit is shared across One Time Door Schedule, Emergency Plan, and Door Schedule

  5. Monitor Point Groups: 128

  6. Max Doors with Readers: 17

255
​
(expandable up to 32,000 ; may impact card limit)

32
​
(expandable up to 255 ; may impact card limit)

40724

EP 1502

  1. Card Format: 16

  2. Schedule + OTDS: 250 (5 reserved by Genea)

  3. Holiday: 255

  4. IO Rules + Emergency Plan + Global IO Rule (BE): 1014
    ​Note: IO Rule limit is shared across One Time Door Schedule, Emergency Plan, and Door Schedule

  5. Monitor Point Groups: 128

  6. Max Doors with Readers: 64

255
​
(expandable up to 32,000 ; may impact card limit)

32
​
(expandable up to 255 ; may impact card limit)

40724

EP 2500

  1. Card Format: 16

  2. Schedule + OTDS: 250 (5 reserved by Genea)

  3. Holiday: 255

  4. IO Rules + Emergency Plan + Global IO Rule (BE): 1014
    ​Note: IO Rule limit is shared across One Time Door Schedule, Emergency Plan, and Door Schedule

  5. Monitor Point Groups: 128

  6. Max Doors with Readers: 64

255
​
(expandable up to 32,000 ; may impact card limit)

32
​
(expandable up to 255 ; may impact card limit)

104061

EP 4502

  1. Card Format: 16

  2. Schedule + OTDS: 250 (5 reserved by Genea)

  3. Holiday: 255

  4. IO Rules + Emergency Plan + Global IO Rule (BE): 1014
    ​Note: IO Rule limit is shared across One Time Door Schedule, Emergency Plan, and Door Schedule

  5. Monitor Point Groups: 128

  6. Max Doors with Readers: 64

255
​
(expandable up to 32,000 ; may impact card limit)

32
​
(expandable up to 255 ; may impact card limit)

54799

If you have any questions, please reach out to acsupport@getgenea.com for assistance.

Related Articles
Genea Security Product Updates
Did this answer your question?