Industrial gateway RT620

telemetryIoTWAN

Overview
The RT620 is a rugged, programmable cellular Remote Terminal Unit (RTU) gateway designed for industrial IoT/M2M deployments in smart city, remote monitoring, automation, environmental and water-management applications. Housed in a compact metal enclosure to ensure reliable operation in harsh environments and simplify installation and maintenance.

Robust Connectivity & Protocol Support

• Industrial-grade cellular: 5G RedCAP / FDD 4G / TDD 4G / HSPA/UMTS / EDGE/GPRS.
• APN/VPDN private network support; standard TCP/IP, HTTP/HTTPS.
• VPN support: OpenVPN, IPSec, Wireguard, Zerotier.
• Integrated MQTT and Modbus RTU for seamless SCADA and cloud integration.
• 1 WAN and 1 LAN port (10/100 Mbps), standard routing features.

Versatile I/O & Programmability

• 3 × RS485 ports and 1 × RS232 for serial devices and local configuration.
• 12 analog inputs (12-bit) supporting 4–20 mA and 0–5 V sensors.
• 16 digital inputs: 12 dry-contact (passive) channels and 4 wet-contact (0–5 V) active channels.
• 2 relay outputs (COM/NC/NO) for external control.
• 24V/12V/5V sensor power outputs and 2 VIN-derived outputs (≈ VIN−1.1 V).
• Programmable local scripts for DI/AI handling and Modbus customization.

Advanced Features

• Optional built-in GPS/Beidou for asset tracking; optional local storage for offline reliability.
• Real-time clock (RTC) for accurate time-stamped logging.
• Remote management via WLINK M2M platform: firmware upgrade and parameter configuration.
• Remote configuration via SMS and AT+ commands.

Industrial Durability & Flexibility

• Rugged metal housing with optimized EMC design for harsh environments.
• Wide input voltage and extended operating/storage temperature ranges.
• Pluggable industrial terminal blocks for simplified installation and maintenance.
• Wall-mountable; shock and vibration compliance (SAE J1455).

Interfaces & Power

• Antennas: 2 × Cellular SMA-K (female); optional 1 × GPS SMA-K; optional 2 × Wi‑Fi RP-SMA.
• Ports: 1 × LAN (10/100 Mbps), 1 × WAN (10/100 Mbps), 1 × USB 2.0, Micro SIM/R-UIM (1.8/3 V supported).
• Power input: DC +7.5–32 V (recommended +24 V / 1 A). Reverse-polarity protection.
• Power output: 2 VIN outputs (≈ VIN−1.1 V), 2 × +12 V channels, 1 × +5 V channel for sensors.
• Relay ratings: example max 1 A/30 V DC; 0.3 A/60 V DC; 0.5 A/125 V AC (small-signal relays).

Serial & Network

• RS485: 3 channels, default 9600 bps, configurable 1200–57600 bps; supports Modbus RTU.
• RS232: 1 channel for local upgrades/configuration, default 115200 bps.
• Network features: VLAN, port forwarding, IP passthrough, IP/MAC/domain/keyword filtering, ICMP/Traceroute checks.

Analog & Digital Signal Handling

• Analog inputs: 12 channels, 12-bit sampling accuracy, support for 4–20 mA and 0–5 V sensors.
• Active digital inputs: 4 channels (0–5 V, common ground with system GND required).
• Passive digital inputs: 12 dry-contact channels for switch signals.

Applications

• Refrigerated vehicle monitoring
• Oilfield and pipeline monitoring
• Coal-mine monitoring
• Security and perimeter monitoring
• Environmental monitoring
• Water conservancy and irrigation
• Heating and natural gas systems
• Power SCADA and remote telemetry

Technical specifications

• Model: RT620
• Network: 5G RedCAP / FDD 4G / TDD 4G / HSPA/UMTS / EDGE/GPRS
• Output Power: Class4 (2 W) @900 MHz; Class1 (1 W) @1800 MHz
• RF Gain: 1.4 dBi @900 MHz; 3 dBi @1800 MHz; RF impedance 50 Ω
• Dimensions: 236 × 125 × 40 mm (84 mm with wall-mount kit)
• Weight: 500 g (excl. accessories)
• Operating: -30 °C to +75 °C; Storage: -40 °C to +85 °C; Humidity: 0–95% non-condensing
• Warranty: Two years
• Interfaces: 2 × Cellular SMA-K, 1 × GPS SMA-K (opt.), 2 × Wi‑Fi RP-SMA (opt.), 1 × LAN, 1 × WAN, 1 × USB 2.0, Micro SIM/R-UIM
• Serial: 1 × RS232 (RXD, TXD, GND), 3 × RS485 (A, B); Baud 300–115200 bps
• I/O: 12 × DI (dry), 4 × DI (wet 0–5 V), 12 × AI (4–20 mA / 0–5 V, 12-bit), 2 × Relay
• Power: DC +7.5–32 V; typical consumption ~180 mA @24 V (transfer), idle 100 mA @24 V (max)
• GPS/Beidou (opt.): sensitivity −160 dBm; accuracy 2.5 m CEP; update 1 Hz (up to 5 Hz); TTFF cold 27 s, hot 1 s; NMEA-0183
• Protocols: PPP/TCP/UDP/Ping, MQTT, Modbus RTU; VPN: OpenVPN / IPSec / Wireguard / Zerotier