Description
Alarm.com ADC-AC-X100 HID Aero 2-Door / 2-Reader Expansion Module
The Alarm.com ADC-AC-X100 HID Aero expansion module adds control for two additional access control readers and doors to a compatible Alarm.com ADC-AC-X1100 Door Controller. Designed for commercial access control expansion, the X100 provides two dedicated reader inputs, four relay outputs, and four programmable inputs for connecting readers, electric locking hardware, door position switches, request-to-exit devices, and related access control equipment. Support for Wiegand and OSDP readers makes the ADC-AC-X100 a flexible choice for expanding Alarm.com Smarter Access Control installations.
ADC-AC-X100 Key Features
- Manufacturer: Alarm.com
- Part Number: ADC-AC-X100
- Platform: HID Aero / Alarm.com Smarter Access Control
- Expansion Capacity: 2 additional readers / doors
- Reader Inputs: 2 dedicated inputs
- Reader Support: Wiegand and OSDP
- Relay Outputs: 4 Form-C relay outputs
- Programmable Inputs: 4
- Communication: Shielded 2-wire RS-485
- Controller Compatibility: ADC-AC-X1100
- Supports LED and buzzer control
- Designed for commercial access control expansion
Expand an Alarm.com X1100 Access Control System
The ADC-AC-X100 is used when an Alarm.com access control installation needs additional controlled openings beyond those supported directly by the primary controller. Each X100 supplies the I/O required for two additional doors using one reader per opening.
Alarm.com allows multiple X100 modules to be connected to an X1100 controller, making the platform scalable for larger commercial access control systems without requiring an individual network controller for every two doors.
Wiegand and OSDP Reader Support
The ADC-AC-X100 supports compatible Wiegand and OSDP access control readers. This allows integrators to use traditional Wiegand reader wiring or deploy supported OSDP reader technology depending on the system design. The module also provides LED and buzzer control for compatible readers, helping support normal credential presentation and access-status feedback.
Door Inputs & Monitoring
Four programmable inputs can be used for common door-monitoring devices, including:
- Door position switches
- Request-to-exit devices
- Supervised or unsupervised input circuits
- Other compatible access control monitoring devices
Dedicated inputs are also provided for tamper, AC fail, and battery fail monitoring.
Lock & Relay Control
The module provides four Form-C relay outputs for connection to compatible locking hardware and other controlled devices. This gives installers the I/O required for typical two-door access control configurations.
Relay contacts are rated up to 5 A at 30 VDC resistive for normally-open operation and 3 A at 30 VDC resistive for normally-closed operation.
Scalable HID Aero Access Control Expansion
The ADC-AC-X1100 provides two expansion ports, and Alarm.com supports up to 16 expansion modules per port, or up to 32 expansion modules total. Using X100 two-reader expansion modules, a single X1100 controller can support systems managing up to 64 doors, depending on system configuration.
Common Applications
- Commercial access control expansion
- Adding two controlled doors to an X1100 system
- Office buildings
- Retail locations
- Warehouses and distribution facilities
- Multi-tenant commercial properties
- Healthcare facilities
- Schools and institutional facilities
- Wiegand reader installations
- OSDP reader installations
Alarm.com Smarter Access Control
When deployed as part of a compatible Alarm.com system, access control can integrate with the broader Alarm.com for Business platform. Supported functionality includes user and door management, flexible schedules, mobile control, credential enrollment, and integration with compatible Alarm.com intrusion and video services.
Alarm.com HID Aero Module Comparison
| Module | Primary Function | Reader Inputs | Best Use |
|---|---|---|---|
| ADC-AC-X100 | Two-door / reader expansion | 2 | Adding two controlled openings to an X1100 system |
| ADC-AC-X200 | Input monitoring expansion | — | Adding additional monitored inputs |
| ADC-AC-X300 | Output control expansion | — | Adding additional controlled outputs |
Why choose the ADC-AC-X100? Select the X100 when your Alarm.com HID Aero installation needs the complete reader, input, and relay I/O required to add two additional access-controlled openings.
Compatibility Notice
Important: The ADC-AC-X100 is designed for use with the Alarm.com ADC-AC-X1100 Door Controller. It is an expansion module and does not operate as a standalone network door controller. Confirm controller type, reader protocol, available power, locking hardware, and required door I/O before ordering.
Alarm.com ADC-AC-X100 Two-Reader Expansion Module for HID Aero Access Control
The Alarm.com ADC-AC-X100 provides the reader, relay, and input capacity required to add two access-controlled doors to a compatible HID Aero / Alarm.com X1100 installation. With Wiegand and OSDP reader support, four relay outputs, four programmable inputs, and RS-485 controller communication, it provides a flexible expansion path for commercial access control systems.
For businesses expanding an Alarm.com Smarter Access Control deployment, the ADC-AC-X100 provides a scalable method for adding controlled openings while maintaining centralized management through the Alarm.com platform.
While we strive to provide accurate imagery, product photos may not reflect the exact model or configuration offered. Please refer to the product description and part number for details, or contact us for assistance before ordering.
