Smart city systems
Gateways for smart pole cabinets, lighting nodes, cameras, screens and municipal edge devices.
Reliable cellular gateway for outdoor IoT and industrial automation. Net Join IoT gateways connect sensors, PLCs, cameras, meters and edge devices through 5G, 4G, Ethernet, RS485 and Wi-Fi options.
Start with the project scenario, then confirm interfaces, network options and supporting documents before sending an inquiry.
Gateways for smart pole cabinets, lighting nodes, cameras, screens and municipal edge devices.
Remote access, PLC connectivity, device aggregation and local protocol conversion for factory sites.
Metering, cabinet monitoring and alarm relay for power rooms, substations and utility assets.
Rugged field gateways for remote devices, unattended cabinets and custom infrastructure projects.
Founded in 2018 in Xiamen, China, NetJoin (Xiamen Nengjia New Energy Technology Co., Ltd.) is a National High-Tech Enterprise specializing in smart gateways and AIoT system solutions. With 100+ intellectual property rights and experience operating over one million outdoor IoT nodes, we deliver high-performance, multi-protocol gateway products and reliable IoT connectivity solutions for global markets.
Our smart gateways support 4G, 5G, Wi-SUN, LoRaWAN, Sigfox, NB-IoT, ZigBee and WiFi, enabling seamless device interconnection and unified IoT management across smart lighting, smart agriculture, smart solar energy and smart water management projects.
We provide global-standard gateway products and professional technical support worldwide.
Start with a general product category, then compare specific gateway models by network, interface and project fit.
AIoT water conservancy gateway platform for monitoring water sites, outdoor IoT nodes and unified water management.
Industrial 4G LTE edge gateway for smart city cabinets, remote monitoring, automation and outdoor field devices.
Router-style gateway with SFP, WAN and multiple LAN ports for cabinet networks.
Gateway for smart pole cabinets and municipal edge devices.
4G controller with RS485 interfaces and wide-voltage power input.
Remote terminal unit for I/O acquisition and station monitoring.
For industrial IoT projects, the gateway is the bridge between legacy field equipment and modern cloud platforms. Net Join IoT provides cellular gateway models for data acquisition, transparent transmission, protocol access and remote O&M.
Core options for cellular gateway projects. Final model selection depends on network, interface and installation requirements.
| Product type | Industrial IoT gateway, 5G gateway, 4G IoT controller, RTU and smart pole gateway series |
|---|---|
| Cellular network | 5G / 4G LTE options by model; SIM slot available on selected models |
| Ethernet | WAN / LAN / multi-LAN / SFP options by model |
| Serial and I/O | RS485, digital input, digital output and analog input options by model |
| Power input | 9-80V on selected 4G controller models; other power ranges available by model |
| Operating temperature | Wide-temperature options available by model; confirm the final value with the datasheet |
| Installation | Wall mount / cabinet mount; DIN rail options available by project |
| Customization | Logo, product label, interface configuration, firmware settings and OEM / ODM cooperation available by project |
Keep the application section clear and concise so visitors can quickly match each gateway to their project.
Aggregate lighting, cameras, environmental sensors and pole cabinet devices through one gateway.
Provide cellular backhaul and remote access for PLCs, machines, meters and edge equipment.
Collect field data from pumping stations, wells, tanks and distributed utility assets.
Connect cameras, warning terminals, sensors and unattended equipment in remote outdoor environments.
For B2B gateway projects, the fastest quote comes from four details: target network, required ports, device protocol and installation environment. Add model names or photos when available.