TG300-Class gateways are designed for integrated “acquisition, processing, and reporting.” The TG-324 page lists 2G/3G/4G and 4G LTE + 2×Gigabit LAN; the TG-325 page lists 2G/3G/4G/5G and 5G LTE + 2×Gigabit LAN. Their core role is to aggregate data from field serial, I/O, and Ethernet devices locally and then report it in real time, at scheduled intervals, or by event according to the project strategy. 1. Cellular uplink: Select 4G or 5G according to the model. The project should confirm local frequency bands, carrier, APN, signal coverage, service charges, and roaming strategy. 2. Local Gigabit network: Representative models provide 2×Gigabit LAN for connecting the device network and maintenance network. Support for WAN/LAN switching, VLAN, and port isolation must be confirmed according to the actual software version. 3. Edge data flow: The detail pages list real-time acquisition/reporting, interval acquisition/scheduled reporting, and custom modes, which can reduce unnecessary data transmission, retain on-site logic, and support collaboration with cloud platforms. 4. Positioning and expansion: Representative specifications list GNSS as optional, while USB 3.0, Micro SD, and GPIO can support project expansion. Product selection should confirm whether these are included in the actual delivered configuration.

The TG-324 and TG-325 pages both present a relatively complete combination of “Ethernet ports + serial ports + I/O + storage/USB,” suitable for aggregating multiple heterogeneous devices at one edge node. Compared with routers that mainly provide network pass-through, gateways are more suitable for field data acquisition, data preprocessing, protocol access, and local business logic. 1. Serial ports: 2×RS485 and 1×RS232, with 300–115200 bps listed in the specifications; suitable for electricity meters, water meters, gas meters, sensors, PLCs, controllers, and other devices. 2. Digital I/O: Four GPIO channels, specifically listed as 2×DI + 2×DO, can be used for digital-status acquisition, alarm triggering, or simple linkage control. 3. Network: 2×Gigabit LAN, used together with the cellular module for local device networking and uplink deployment. 4. Maintenance and storage: Micro SD, USB 3.0, reset button, and status indicators facilitate debugging, data retention, and on-site maintenance; the functions actually available are subject to the firmware and project configuration. 5. Power and protection: DC 12–36 V. The page lists reverse-polarity, overvoltage/overcurrent, lightning, and surge protection; system-level lightning protection and grounding must still be designed according to site standards.

The value of the TG300-Class lies in converting different field interfaces and protocols into manageable data flows while performing part of the computing and rule processing locally. For project descriptions, its technical advantages can be summarized in the following six points. 1. Cellular and wired convergence: 4G/5G models combined with Gigabit LAN provide uplink and local access for fixed, distributed, or poorly networked sites. 2. Multi-interface acquisition: A combination of RS485, RS232, GPIO, USB, Micro SD, and other interfaces helps connect both new and legacy devices and acquire continuous-value and digital switching data. 3. Edge computing and offline logic: The detail pages emphasize local computing, business logic, and offline processing, making it suitable to move part of the filtering, control, or rule processing closer to the field. 4. Open secondary development: The pages state that the platform is based on OpenWrt/LEDE and supports C/C++, Lua, Go, and Python, providing a foundation for system integrators to implement project logic. 5. Multi-protocol and multi-platform access: It can cover protocol directions related to metering, industry, environmental protection, transportation, and energy consumption, while using network protocols such as TCP/UDP/HTTP/HTTPS to connect to upper-level systems. 6. Industrial reliability: Fanless design, aluminum-alloy heat dissipation, wide temperature/humidity tolerance, and electrical protection are intended for long-term operation. For high-altitude, salt-fog, highly corrosive, special explosion-proof, or exposed outdoor environments, the complete device and cabinet solution should be confirmed separately.

When a project needs to turn data from multiple devices, protocols, and network conditions into unified usable information, an industrial gateway is generally a more suitable node than a router alone. The following six scenarios can serve as the main directions for marketing and project communication. 1. Industrial automation and smart factories: Aggregate PLCs, industrial instruments, production-line sensors, and equipment status, and provide data to SCADA, MES, or industrial platforms. 2. Smart buildings and campus energy consumption: Connect HVAC, lighting, energy meters, pump rooms, and building-control devices to establish a unified monitoring foundation. 3. Smart energy and power: Used for acquisition, reporting, and alarm linkage in distribution rooms, photovoltaic systems, energy storage, charging facilities, and distributed metering. 4. Outdoor environment and municipal facilities: Suitable for data access from water utilities, environmental protection, water-quality monitoring, weather stations, pump stations, waste-treatment equipment, and similar systems; enclosure, protection, power supply, and communication coverage must be considered. 5. Intelligent transportation: Used for status acquisition and remote management of roadside equipment, parking systems, station facilities, and similar devices. 6. Agriculture and water conservancy: Combined with sensors, irrigation controllers, flow meters, and remote-site networks to support acquisition and management of distributed devices.

Representative model pages explicitly show a broad range of protocol directions: Modbus RTU/TCP, MQTT, OPC, HTTP, custom JSON protocols, Environmental Protection 212, Transportation 808, building energy-consumption protocols, as well as DL/T 645-2007, IEC 62056-21, IEC 1107, IEC 61850, DLMS, BACnet, M-Bus, OPC UA, and others. This list indicates compatibility directions and does not mean that every specific project has all device drivers or data models preinstalled. 1. At project startup, first verify the physical interfaces, meter addresses, serial settings, register tables/object models, protocol versions, polling cycles, point lists, and exception codes. 2. For MQTT, define the topic hierarchy, QoS, timestamps, offline caching, resumable transmission, platform authentication, and data-deduplication strategy at the same time. 3. For custom protocols or proprietary devices, provide the protocol documentation and sample hardware to confirm the scope of secondary development, test plan, and acceptance criteria. 4. If the platform side involves BMS, SCADA, EMS, IoT, or cloud services, confirm client/server roles, TLS/certificates, VPN, whitelists, and API rate-limiting requirements before bidding or quotation.

The official website publishes product-inquiry options, sales and general inquiry emails, telephone/WhatsApp, an online shop, and social-media entry points, but the reviewed detail pages do not publish a uniform warranty period or public pricing for all models. Therefore, purchasing and after-sales service should be subject to the product model, configuration list, service scope, and contract terms confirmed in writing by sales. 1. Warranty: Sales can provide optional quotations for the standard warranty, spare units, remote support, 2–5-year extended warranties, and project maintenance services. Do not promise a fixed warranty period externally without written confirmation. 2. Quotation: Providing the quantity, 4G/5G requirements, target country, protocols/points, interfaces, storage, secondary-development needs, certifications, enclosure requirements, and lead time enables a more actionable quotation. 3. Samples: The Tespro Online Shop can be used to review small-quantity sample options. Project samples, volume pricing, and customized versions should be requested through sales@tespro.com. 4. Contact and content channels: The official website also lists info@tespro.com, +852 4609 4648, +1-213 610 4797, and six official social-media channels: Facebook, LinkedIn, YouTube, TikTok, X, and Instagram. 5. Acceptance recommendation: During the sample stage, complete tests for carrier network access, serial data acquisition, protocol mapping, offline recovery, remote upgrades, abnormal alarms, temperature/humidity and power-supply fluctuations, and on-site grounding/protection before mass deployment.