Product Overview
The Linear EXN-4CB 620-100277 is a 4-door eMerge Elite expansion node bundle with a compact enclosure and four included proximity readers. It is designed for expanding a supported eMerge Elite system from a separate node location while supplying the reader hardware for a four-door group.
This bundle is useful when the project needs a compact enclosure and a complete reader package. It provides four reader ports, eight inputs, eight output relays, optional PoE support where designed into the system, and an integrated tamper switch.
The CB suffix matters. EXN-4C is the compact 4-door node without the reader bundle, while EXN-4CB includes the readers. For metal cabinet installations, compare against EXN-4M or EXN-4MB.
Compatible With
- Supported Linear eMerge Elite / Elite-36 systems using EXN expansion nodes
- 4-door compact remote expansion applications where EXN-4CB / 620-100277 is specified
- Sites needing four included proximity readers with the expansion node
- Commercial access control projects requiring four reader ports, eight inputs, and eight output relays
- Offices, commercial suites, secured warehouse areas, tenant spaces, and building perimeter doors
- Related eMerge Elite EXN node family when matched by enclosure type, reader bundle, and system licensing
Features & Specifications
| Specification | Details |
|---|
| Manufacturer | Linear |
| Product Type | eMerge Elite EXN expansion node bundle |
| Part Number | 620-100277 |
| Model | EXN-4CB |
| Application | 4-door compact expansion node with reader bundle |
| Reader Ports | 4 |
| Inputs | 8 |
| Output Relays | 8 |
| Included Readers | 4 proximity readers |
| Enclosure | Compact plastic enclosure with integrated tamper switch |
| Power Options | Optional PoE where supported by system design |
| Notes | Designed to install separately from the eMerge Elite-36 system enclosure |
Also Known As / Related Part Numbers
- 620-100277
- EXN-4CB
- Linear EXN-4CB
- eMerge Elite 4-Door EX Node Compact 4-Reader Bundle
- 4-Door Expansion Node Bundle in Compact Plastic Enclosure
- Related: EXN-4C 620-100276, EXN-4M 620-100281, EXN-4MB, ACM4D 620-100271, 2N1 Reader HAF, P-300HA
Technician Note
This is the compact 4-reader bundle version. If the customer already has readers or needs a metal cabinet, compare the exact EXN suffix before ordering.
Before Ordering
- Confirm the existing eMerge Elite system supports EXN expansion nodes
- Confirm EXN-4CB is required, not EXN-4C or EXN-4M
- Verify reader and credential format compatibility
- Check network and power method at the node location
- Confirm lock power, door contacts, REX devices, and relays
- Verify license capacity for the added doors
Professional Advisory
Access control panels and expansion modules should be installed and serviced by qualified access control or low-voltage technicians. Do not bypass door position inputs, request-to-exit devices, locking hardware safety requirements, fire release requirements, or local code requirements.
Important Ordering Warnings
- Some listings may show conflicting reader-port details; use the model/order number and manufacturer-style specification when confirming
- Do not assume EXN-4CB and EXN-4C include the same components
- Do not substitute compact and metal cabinet versions without checking the project requirements
Product Questions & Answers
Does the EXN-4CB include four readers?
Yes. The CB bundle version is commonly listed as a compact 4-door node bundle with four proximity readers.
How is EXN-4CB different from EXN-4C?
EXN-4CB includes the reader bundle. EXN-4C is the compact node version without the reader bundle indicated.
Can it be used as a remote expansion node?
Yes, when connected to a supported eMerge Elite system with the correct network, power, and license configuration.
Does this replace ACM4D?
Not directly. ACM4D mounts in a supported main cabinet, while EXN-4CB is a separate compact expansion node.
Why should the model suffix be checked?
The suffix identifies important differences such as compact cabinet, metal cabinet, and reader bundle configuration.
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