The **W2AP-D15-R/CE** is a high-performance **Industrial Wireless Access Point** manufactured by **Westermo**. It is designed specifically for harsh environments, such as rail applications (rolling stock) and heavy industrial automation, where vibration, extreme temperatures, and electrical noise are common. --- ## Technical Specifications Overview | Feature | Specification | | :--- | :--- | | **Model** | W2AP-D15-R/CE | | **Wireless Standard** | IEEE 802.11a/b/g/n/ac (Wi-Fi 5) | | **Frequency Bands** | 2.4 GHz and 5 GHz (Dual Band) | | **Ethernet Ports** | 2 x 10/100/1000 Base-T (M12 Connectors) | | **Power Input** | Redundant DC Power (e.g., 24V to 110V DC) | | **IP Rating** | IP66 (Water and Dust Proof) | | **Operating Temp** | -40°C to +70°C | --- ## Core Electronic Components & Architecture ### 1. Processing and Radio Chipsets The device utilizes industrial-grade chipsets capable of supporting **MIMO (Multiple Input, Multiple Output)** technology. This allows for higher data throughput and more reliable connections in environments with significant physical obstructions. ### 2. M12 Interface Connectors Unlike standard RJ45 connectors found on consumer routers, the W2AP-D15-R/CE uses **M12 D-coded or X-coded connectors**. These provide: * **Vibration Resistance:** Threaded locking mechanisms ensure the connection does not loosen on moving trains. * **Sealing:** Contributes to the IP66 rating, preventing moisture ingress. ### 3. Power Supply Unit (PSU) The internal power circuitry is designed for the "R" (Railway) designation: * **Wide Input Range:** Handles fluctuations in voltage common in railway battery systems. * **Galvanic Isolation:** Protects the internal electronics from power surges and electromagnetic interference (EMI). ### 4. RF (Radio Frequency) Front-End * **Antenna Ports:** Usually features QMA or N-type connectors for external antennas. * **Filters:** High-rejection filters are integrated to prevent interference from other onboard electronic systems (like GSM-R or radio communications). --- ## Key Features for Industrial Use * **Dual Radio Support:** Can operate as an Access Point and a Client/Bridge simultaneously or provide redundancy across two different frequencies. * **Cybersecurity Hardware:** Includes hardware-level support for WPA3, VPN (IPsec/OpenVPN), and stateful firewalls. * **EN 50155 Compliance:** This is the critical electronic standard for railway applications, covering temperature, humidity, shock, and vibration. ---