Compex WiFi 7 M.2 Module Series — WLTB7000 (2230 Key E) & WLTE7000 (3042 Key B) Guide
Blog 2026-06-06
Compex WiFi 7 M.2 Module Series — WLTB7000 (2230 Key E) & WLTE7000 (3042 Key B) Specs & Application Scenarios
Key Overview
This guide is for: Hardware engineers and system designers evaluating Compex M.2 form factor WiFi 7 modules for space-constrained embedded designs, or looking for compatible drop-in alternatives.
What This Covers: All 11 Compex M.2 WiFi 7 modules — 4× WLTB7000 series (M.2 2230 Key E) and 7× WLTE7000 series (M.2 3042 Key B). Each module analyzed by form factor, band configuration, power profile, and real-world application fit. Note: The WLTE7002E55 is a 5+6 GHz DBDC module (not 5+5 GHz), as confirmed by the official datasheet.
Key Conclusion: The WLTB7000 series targets ultra-compact embedded systems (laptops, tablet APs, small gateways) where PCB space is at a premium. The WLTE7000 series targets higher-power, higher-performance applications (outdoor APs, carrier-grade CPE) where the larger M.2 3042 form factor allows better thermal dissipation. Zukaka offers pin-compatible alternatives for all models, such as the WLE7002E55 (QCN9274, 5+6 GHz DBDC) for Mini PCIe designs and the WLTE7002E56 (QCN9274, 2.4+5 GHz) for M.2 3042 Key B applications.
M.2 WiFi 7 Series Overview
The M.2 form factor is increasingly preferred in embedded designs because:
- Smaller footprint — M.2 2230 (22×30mm) is approximately 40% smaller than Mini PCIe (30×51mm), critical for space-constrained designs like portable gateways, drone controllers, and compact APs
- Lower profile — M.2 modules sit flush on the PCB, vs. Mini PCIe which stands off at an angle, enabling thinner industrial enclosures
- Direct PCIe integration — M.2 Key E and Key B connectors are standard on many embedded SoM and carrier board designs
- Better thermal coupling — M.2 modules mounted flat against the PCB can use the board’s ground plane as a heat spreader
Key difference between WLTB and WLTE:
- WLTB7000 (M.2 2230 Key E): Uses PCIe 3.0 x1 lane. Designed for low-power embedded systems where PCB space is the primary constraint. All models are 2×2:2 DBDC (dual-band dual-concurrent). Power consumption limited to approximately 6–8W due to the smaller form factor’s thermal constraints.
- WLTE7000 (M.2 3042 Key B): Uses PCIe 3.0 x2 or x4 lanes (depending on model). Supports both 2×2 DBDC and 4×4 single-band configurations. Larger PCB area allows better thermal dissipation, supporting up to 8.5W+ power draw for higher performance.
WLTB7000 Series — M.2 2230 Key E (4 Models)
WLTB7002E25 — 2.4+5 GHz DBDC, M.2 2230 Key E (embedded systems, compact AP)
Real-World Scenario: Compact Embedded IoT Gateway
A manufacturer of industrial IoT gateways needs to fit WiFi 7 capability into a DIN-rail mountable enclosure measuring just 100×70×30mm. The Mini PCIe form factor is too tall, and the PCB has limited real estate. The WLTB7002E25 at 22×30mm fits easily alongside the host processor, Ethernet PHY, and power supply on a compact 4-layer PCB.
In this gateway design, the WLTB7002E25 serves dual purposes: 2.4 GHz connects to legacy field devices (Modbus sensors, PLCs) using 20 MHz channels, while 5 GHz provides a high-speed uplink to the facility’s backbone network at up to 4.32 Gbps. The diplexer keeps antenna count to 2, saving two U.FL connector footprints on the already-crowded PCB. Total module power draw of approximately 6–8W is within the thermal budget of the passively-cooled enclosure.
WLTB7002E26 — 2.4+6 GHz DBDC, M.2 2230 Key E (6 GHz embedded AP)
Real-World Scenario: Portable Event WiFi Hotspot
A rental company provides portable WiFi hotspots for outdoor events, trade shows, and pop-up retail. The device is battery-powered and must be small enough to fit in a backpack. The WLTB7002E26’s compact M.2 2230 form factor enables a design that is approximately 60% smaller than a comparable Mini PCIe-based hotspot.
The hotspot uses 6 GHz (where regulatory approved) as the primary service band, delivering up to 5.76 Gbps PHY rate for event attendees’ devices. The 2.4 GHz radio is used for device management and as a fallback for legacy clients. The module’s 2×2:2 configuration keeps power consumption low enough to support 4+ hours of battery operation with a 10,000 mAh battery pack.
WLTB7002E55 — 5+5 GHz DBDC, M.2 2230 Key E (dual-5 GHz compact AP)
Real-World Scenario: Compact Classroom AP
A K-12 school district installs one AP per classroom (approximately 900 sq ft per room). The AP must be ultra-compact to mount flush on the ceiling tile without protruding. The WLTB7002E55 provides dual 5 GHz radios in a tiny M.2 2230 package, enabling a total AP board size of approximately 80×80mm.
Each classroom AP serves 30–40 student devices simultaneously. With dual 5 GHz radios, the AP dedicates one radio to student devices and one to the teacher’s device plus screen-sharing system, preventing a single student’s heavy usage (e.g., video streaming) from degrading the teacher’s interactive content delivery. The 2×2:2 configuration per radio is sufficient for 15–20 concurrent clients per radio in a classroom setting.
WLTB7002E56 — 5+6 GHz DBDC, M.2 2230 Key E (compact tri-band infrastructure)
Real-World Scenario: Small Business All-in-One Gateway
A small business (café, boutique hotel, co-working space) needs an all-in-one gateway that combines routing, firewall, and WiFi 7 in a desktop form factor. The designer chooses the WLTB7002E56 because its 5+6 GHz configuration allows one band for guest WiFi (5 GHz, wide compatibility) and one band for POS/back-office traffic (6 GHz, dedicated throughput).
The M.2 2230 form factor allows the module to be placed on the bottom side of the PCB, directly under a heatsink that doubles as the device’s bottom plate. The total device size is approximately 140×100×25mm — small enough to sit on a counter without being conspicuous.
WLTE7000 Series — M.2 3042 Key B (7 Models)
WLTE7002E25 — 2.4+5 GHz DBDC, M.2 3042 Key B (industrial CPE, outdoor AP)
Real-World Scenario: Outdoor Industrial CPE
An industrial CPE manufacturer needs a WiFi 7 module for an outdoor-rated subscriber unit (IP65 enclosure, passive cooling, -30°C to +60°C ambient). The Mini PCIe form factor creates thermal challenges in a sealed enclosure because the module stands at an angle. The WLTE7002E25’s M.2 3042 flat-mount design allows thermal coupling to the enclosure’s aluminum backplate.
The CPE uses 2.4 GHz for long-range connectivity to a base station up to 3 km away (better propagation at 2.4 GHz in rural environments), while 5 GHz serves local clients in a workshop or farm building. The M.2 3042 form factor provides better mechanical retention than M.2 2230 through the screw-mount at the 42mm length point, important for outdoor installations subject to wind vibration.
WLTE7002E26 — 2.4+6 GHz DBDC, M.2 3042 Key B (6 GHz CPE, fixed wireless access)
Real-World Scenario: Fixed Wireless Access (FWA) CPE for 6 GHz
An ISP deploying fixed wireless access in suburban areas uses 6 GHz spectrum for subscriber links. The CPE on each subscriber’s rooftop uses the WLTE7002E26: 6 GHz for the backhaul link to the ISP’s base station (up to 5.76 Gbps, 320 MHz channels), and 2.4 GHz for in-home WiFi coverage.
The M.2 3042 form factor is preferred because the larger PCB allows the module to include additional circuitry for ESD protection (important for outdoor installations with long antenna cable runs) and surge protection. The flat-mount design enables a lower-profile CPE enclosure that presents less wind load on the mounting pole.
WLTE7002E55 — 5+6 GHz DBDC, M.2 3042 Key B (high-capacity backhaul, PtMP base station)
Real-World Scenario: Point-to-Multipoint Base Station Sector Module
A WISP base station on a 50m tower uses three sector antennas, each covering 120°. Each sector requires a dedicated radio. The WLTE7002E55 provides 5+6 GHz dual-band operation in one M.2 module, enabling a single sector to serve 5 GHz clients while using the 6 GHz radio as a dedicated backhaul link to the nearest fiber aggregation point — eliminating the need for a separate backhaul radio.
In a real deployment, the base station uses three WLTE7002E55 modules (one per sector). Each module’s 5 GHz radio operates on non-DFS channels (e.g., 5.8 GHz) serving subscriber CPEs, while the 6 GHz radio establishes a PtMP backhaul link using 320 MHz channels at up to 5.76 Gbps per sector. Total base station capacity: approximately 25 Gbps aggregate.
WLTE7002E56 — 5+6 GHz DBDC, M.2 3042 Key B (smart city AP, multi-service node)
Real-World Scenario: Smart City Multi-Service Node
A smart city deployment mounts multi-service nodes on streetlight poles. Each node includes surveillance cameras, environmental sensors, digital signage, and public WiFi. The WLTE7002E56 provides 5 GHz for public WiFi and 6 GHz for backhaul to the fiber aggregation point, eliminating the need for a separate backhaul radio.
The M.2 3042 form factor’s larger ground plane aids thermal management in the passively-cooled streetlight node, where internal temperatures can reach +65°C in summer. The QCN9274 industrial-grade chipset option provides the -40°C to +85°C temperature range needed for year-round outdoor operation.
WLTE7000E2 — 2.4 GHz 4×4:4, M.2 3042 Key B (high-capacity IoT concentrator)
Real-World Scenario: Large-Scale IoT Sensor Concentrator
A smart building management system aggregates data from 500+ wireless sensors (temperature, occupancy, air quality, lighting) across a 20-floor office tower. The concentrator on each floor uses the WLTE7000E2 with 4×4:4 at 2.4 GHz to serve up to 60 sensors per floor. The 4×4 MU-MIMO enables the concentrator to poll four sensors simultaneously, reducing the total round-robin cycle time from 5 seconds (2×2) to approximately 2 seconds.
The M.2 3042 form factor allows the concentrator board to integrate the module alongside a PoE-powered Ethernet switch IC and a local edge processor, all in a compact DIN-rail package approximately 120×80×30mm.
WLTE7000E5 — 5 GHz 4×4:4, M.2 3042 Key B (high-throughput enterprise AP)
Real-World Scenario: Slim Ceiling-Mount Enterprise AP
An enterprise AP OEM designs a slim-profile ceiling-mount AP (180mm diameter, 25mm height). Using M.2 3042 modules instead of Mini PCIe reduces the overall AP height by approximately 8mm. The WLTE7000E5’s 4×4:4 delivers 8.65 Gbps PHY rate, competitive with any Mini PCIe-based design, in a thinner package.
The AP combines a WLTE7000E5 (5 GHz 4×4, client-facing) with a WLTB7002E25 (2.4+5 GHz, for IoT management) to provide dual-band coverage in a single slim enclosure. This dual-module approach is a common design pattern for premium enterprise APs targeting modern slim-form-factor aesthetics.
WLTE7000E6 — 6 GHz 4×4:4, M.2 3042 Key B (max-throughput 6 GHz enterprise)
Real-World Scenario: 6 GHz-Only Enterprise AP for Premium Venues
A luxury hotel chain deploys 6 GHz-only WiFi 7 APs in guest rooms and suites, providing dedicated high-speed connectivity without interference from neighboring consumer APs on 2.4/5 GHz. The WLTE7000E6’s 4×4:4 at 6 GHz delivers up to 11.53 Gbps — enough for a single room’s devices (4–8 devices per room) to simultaneously stream 8K content, participate in video calls, and use cloud services.
The M.2 3042 Key B form factor with PCIe 3.0 x4 provides sufficient interface bandwidth to support the module’s full 11.53 Gbps PHY rate without PCIe bottleneck. Each guest-room AP is powered over a single PoE++ (802.3bt) connection, with the module’s 8.5W max draw well within the 71W PoE budget.
Full Specification Comparison Table
| Model | Form Factor | Band Config | MIMO | Max PHY Rate | Interface | Best For |
|---|---|---|---|---|---|---|
| WLTB7002E25 | M.2 2230 Key E | 2.4+5 GHz DBDC | 2×2:2 | 688 Mbps / 4.32 Gbps | PCIe 3.0 x1 | Compact embedded gateway |
| WLTB7002E26 | M.2 2230 Key E | 2.4+6 GHz DBDC | 2×2:2 | 688 Mbps / 5.76 Gbps | PCIe 3.0 x1 | Portable hotspot, 6 GHz AP |
| WLTB7002E55 | M.2 2230 Key E | 5+5 GHz DBDC | 2×2:2 | 4.32 Gbps ×2 | PCIe 3.0 x1 | Compact classroom AP |
| WLTB7002E56 | M.2 2230 Key E | 5+6 GHz DBDC | 2×2:2 | 4.32 / 5.76 Gbps | PCIe 3.0 x1 | SMB all-in-one gateway |
| WLTE7002E25 | M.2 3042 Key B | 2.4+5 GHz DBDC | 2×2:2 | 688 Mbps / 4.32 Gbps | PCIe 3.0 x2 | Outdoor CPE, industrial |
| WLTE7002E26 | M.2 3042 Key B | 2.4+6 GHz DBDC | 2×2:2 | 688 Mbps / 5.76 Gbps | PCIe 3.0 x2 | FWA CPE, 6 GHz subscriber |
| WLTE7002E55 | M.2 3042 Key B | 5+6 GHz DBDC | 2×2:2 | 4.32 / 5.76 Gbps | PCIe 3.0 x2 | PtMP base station sector |
| WLTE7002E56 | M.2 3042 Key B | 5+6 GHz DBDC | 2×2:2 | 4.32 / 5.76 Gbps | PCIe 3.0 x2 | Smart city multi-service node |
| WLTE7000E2 | M.2 3042 Key B | 2.4 GHz only | 4×4:4 | 1.37 Gbps | PCIe 3.0 x4 | IoT concentrator (high sensor density) |
| WLTE7000E5 | M.2 3042 Key B | 5 GHz only | 4×4:4 | 8.65 Gbps | PCIe 3.0 x4 | Slim enterprise AP |
| WLTE7000E6 | M.2 3042 Key B | 6 GHz only | 4×4:4 | 11.53 Gbps | PCIe 3.0 x4 | 6 GHz-only premium AP |
Application Scenarios by Module
| Application | Recommended Module | Why This Module Fits |
|---|---|---|
| DIN-rail IoT gateway (space-constrained) | WLTB7002E25 | Smallest form factor (22×30mm) fits compact enclosures. 2.4+5 GHz covers legacy + modern clients. |
| Portable battery-powered hotspot | WLTB7002E26 | Ultra-low power consumption, M.2 2230 fits handheld design. 6 GHz for clean spectrum operation. |
| Classroom AP (per-room deployment) | WLTB7002E55 | Dual 5 GHz radios separate student + teacher traffic. Compact form factor fits flush-mount ceiling AP. |
| SMB all-in-one gateway/router | WLTB7002E56 | 5 GHz for guest WiFi, 6 GHz for back-office/POS. Single module replaces two separate radios. |
| Outdoor CPE (IP65 enclosure) | WLTE7002E25 | M.2 3042 flat-mount for thermal coupling to enclosure. 2.4 GHz for long-range, 5 GHz for local clients. |
| Fixed wireless access subscriber CPE | WLTE7002E26 | 6 GHz backhaul at up to 5.76 Gbps. 2.4 GHz for in-home coverage. Indoor/outdoor rated. |
| WISP PtMP base station sector | WLTE7002E55 | 5+6 GHz dual-band: 5 GHz for client access, 6 GHz for dedicated backhaul. Up to 8.6 Gbps aggregate per sector. |
| Streetlight smart city node | WLTE7002E56 | 5 GHz for public WiFi, 6 GHz for backhaul. M.2 3042 ground plane aids passive thermal management. |
| Multi-floor IoT sensor concentrator | WLTE7000E2 | 4×4:4 at 2.4 GHz serves 60+ sensors per floor. MU-MIMO reduces polling cycle time. |
| Slim-profile enterprise AP (<25mm height) | WLTE7000E5 | M.2 flat-mount enables 8mm thinner AP vs. Mini PCIe. 8.65 Gbps 4×4:4 in a slim package. |
| 6 GHz-only premium hotel room AP | WLTE7000E6 | 11.53 Gbps max throughput in clean 6 GHz spectrum. PCIe 3.0 x4 avoids interface bottleneck. |
Zukaka ZK-WLTB7000 & ZK-WLTE7000 — Drop-In Compatible Alternatives
| Compex Module | Zukaka Alternative | Form Factor | Band Config | Chipset Options |
|---|---|---|---|---|
| WLTB7002E25 | ZK-WLTB7002E25 | M.2 2230 Key E | 2.4+5 GHz DBDC | QCN6224 / QCN6274 / QCN9274 |
| WLTB7002E26 | ZK-WLTB7002E26 | M.2 2230 Key E | 2.4+6 GHz DBDC | QCN6274 / QCN9274 |
| WLTB7002E55 | ZK-WLTB7002E55 | M.2 2230 Key E | 5+5 GHz DBDC | QCN6274 / QCN9274 |
| WLTB7002E56 | ZK-WLTB7002E56 | M.2 2230 Key E | 5+6 GHz DBDC | QCN6274 / QCN9274 |
| WLTE7002E25 | ZK-WLTE7002E25 | M.2 3042 Key B | 2.4+5 GHz DBDC | QCN6224 / QCN6274 / QCN9274 |
| WLTE7002E26 | ZK-WLTE7002E26 | M.2 3042 Key B | 2.4+6 GHz DBDC | QCN6274 / QCN9274 |
| WLTE7002E55 | ZK-WLTE7002E55 | M.2 3042 Key B | 5+6 GHz DBDC | QCN6274 / QCN9274 |
| WLTE7002E56 | ZK-WLTE7002E56 | M.2 3042 Key B | 5+6 GHz DBDC | QCN6274 / QCN9274 |
| WLTE7000E2 | ZK-WLTE7000E2 | M.2 3042 Key B | 2.4 GHz 4×4:4 | QCN6224 / QCN9274 |
| WLTE7000E5 | ZK-WLTE7000E5 | M.2 3042 Key B | 5 GHz 4×4:4 | QCN6224 / QCN6274 / QCN9274 |
| WLTE7000E6 | ZK-WLTE7000E6 | M.2 3042 Key B | 6 GHz 4×4:4 | QCN6274 / QCN9274 |
As with all Zukaka modules, each ZK-WLTB7000 and ZK-WLTE7000 module is built on the same Qualcomm reference design as the corresponding Compex module. This ensures identical RF characteristics, driver compatibility (ath12k Linux driver, Qualcomm QSDK), and antenna requirements. Key advantages of choosing Zukaka include ODM customization (custom PCB shapes, modified RF front-ends), OEM branding (custom labels and packaging), and dedicated FAE support per project.
For a full comparison of all Compex WiFi modules and their Zukaka alternatives, see: Compex WiFi Module Alternative — Complete Cross Reference.
Frequently Asked Questions
Q1: Can a WLTB7000 (2230 Key E) module be used in an M.2 3042 Key B socket?
No. The two form factors use different keying (Key E vs Key B), different PCIe lane counts (x1 vs x2/x4), and different mechanical mounting (2230 has one mounting hole at 30mm, 3042 has a second at 42mm). Attempting to mount a 2230 module in a 3042 socket will not align with the mounting screw and may damage the edge connector due to the keying mismatch.
Q2: Which M.2 modules support PCIe 3.0 x4?
The WLTE7000E2, WLTE7000E5, and WLTE7000E6 (all single-band 4×4:4 modules in M.2 3042 Key B) support PCIe 3.0 x4. This is necessary because the 8.65–11.53 Gbps PHY rate of these modules exceeds the throughput capability of PCIe 3.0 x1 (~1 GB/s) or x2 (~2 GB/s). All WLTB7000 series modules (2230 Key E) and the DBDC WLTE7002E series modules use PCIe 3.0 x1 or x2 respectively.
Q3: Are WLTB7000 modules suitable for outdoor use?
The WLTB7000 modules are designed for embedded indoor use by default. The M.2 2230 form factor’s smaller PCB area limits the amount of ESD protection and filtering that can be integrated. For outdoor applications, the WLTE7000 series (M.2 3042) with QCN9274 industrial-grade option is recommended, as the larger PCB allows additional protection circuitry.
Q4: How does the Compex M.2 series compare to their Mini PCIe series in terms of RF performance?
For the same chipset and band configuration, RF performance is essentially identical. The choice between M.2 and Mini PCIe is driven by mechanical and system-level considerations (form factor, thermal management, connector availability on the host board), not RF performance. The same Qualcomm reference design is used regardless of form factor.
Q5: Can Zukaka provide modules with custom chipset selection (e.g., QCN9274 on a WLTB7002E55)?
Yes. Zukaka’s ODM service allows flexible chipset selection across the ZK-WLTB7000 and ZK-WLTE7000 series. If the standard Compex offering for a particular model only includes QCN6274 but you need industrial-temperature QCN9274, we can accommodate this. Contact our engineering team with your requirements.
Q6: What is the lead time for ZK-WLTB7000 and ZK-WLTE7000 samples?
Sample lead time is 3–5 business days for standard configurations. Production lead time varies by volume and customization requirements. We maintain buffer inventory for the most common configurations to enable rapid evaluation.
Related Guides
- Compex WiFi Module Alternative — Complete Cross Reference — All Compex modules with Zukaka drop-in alternatives
- Compex WLE7000 Series Guide — Mini PCIe WiFi 7 Modules — Mini PCIe form factor WiFi 7 modules
- Compex WiFi 6 & WiFi 6E Module Guide — WLE3000HX, WLW3000H6 series
- WiFi 7 Module Buying Guide — How to select the right WiFi 7 module
- Industrial WiFi Modules Guide — IoT, Robotics, WISP applications
