GE Security Interlogix 120-3851 8 Door Controller Expansion Pack, PCB Only, (4 x 2 Door Boards)
SKU
120-3851
Model No
120-3851
$1,280.37
Product Highlights
- Pre-wired and Ready to Install (for local or central installation)
- Complete Control for 2 Doors and 4 Reader (In/Out) Applications
- Localized Database Fallback
- Install Up to 2000' (700m) from the Monitor XL Control Panel
- Controller Can Operate Up to 500' (150m) from Each Reader

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The 120-3851 from Interlogix is a highly efficient 8 door controller expansion pack, designed to enhance your access control systems with its user-friendly and flexible features. With the ability to control two doors and four reader applications per board, it ensures robust security. Its local fallback user database guarantees that authorized personnel maintain access even during communication failures, making this expansion pack a reliable addition to your monitoring system.
GE Security Interlogix 120-3851 Camera Features
Features
- Pre-wired and Ready to Install: Simplifies the installation process for local or central setups, saving time and effort.
- Complete Control for 2 Doors and 4 Reader (In/Out) Applications: Enhances monitoring capabilities by providing comprehensive door management.
- Localized Database Fallback: Ensures continuous access for designated users during communication failures, boosting reliability.
- Install Up to 2000' (700m) from the Monitor XL Control Panel: Flexibility in installation locations helps adapt to varied site requirements.
- Controller Can Operate Up to 500' (150m) from Each Reader: Greatly expands coverage, enabling proper door monitoring over significant distances.
- Supports Wiegand, Magnetic Stripe and Proximity Readers: Offers diverse reader compatibility, ensuring versatility in usage.
- Supports Optional Wiegand Keypad for Card + PIN Applications: Adds an extra security layer through multi-factor authentication.
- 2 Door and Multiple Door Controller Packages: Provides options for scalability depending on your access control needs.
GE Security Interlogix 120-3851 Detailed Specifications
| Controller Type | 8 Door Expansion Pack (4 x 2 Door Boards) |
| Connectivity | Pre-wired for local/central installation |
| Control Capability | 2 doors and 4 readers (In/Out) per board |
| Access Database | Localized fallback database |
| Maximum Distance from Control Panel | 2000' (700m) |
| Operating Distance from Readers | Up to 500' (150m) |
| Reader Compatibility | Wiegand, Magnetic Stripe, Proximity |
| Optional Features | Wiegand Keypad for Card + PIN |
| Package Options | 2 Door and Multiple Door Controller Packages available |
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