GPS WiFi RS232 RS485 DI DO Industrial Dual SIM 4G Modem Router

Full-Band Cellular Compatibility - Supports 2G/3G/4G LTE (t), 5G SA/NSA (f), and lightweight 5G RedCap (frc) versions, compatible with global mainstream FDD/TDD frequency bands.

Flexible SIM & Failover Management - Single/dual SIM slots support 1.8V/3V UIM cards (eSIM optional on select models), with multi-SIM switching by timer, signal strength, dial failure, data usage, etc

Rugged Industrial Design - IP30 metal housing (IP68 available on outdoor models) rated for vibration, shock, and dust resistance, with built-in reverse-polarity, transient voltage, and overcurrent.

Serial & DI/DO Connectivity - Configurable RS232/RS485 serial ports (-S2/-S4), up to 4-channel DI/DO support enable direct integration with industrial sensors. (Optional on select models)

Wide Operating Range - Operating temperature from -35 to 75 and storage from -40 to 85 Celcius, with up to 95% humidity tolerance (non-condensing), reliable performance in harsh field environments.

Centralized Remote Management - Manageable via E-Lins cloud NMS platform, TR-069, SNMP v1/v2c/v3, and open API, with local and OTA remote firmware upgrades plus SMS-based remote control and alerts.

Comprehensive Security Suite - Built-in IPSec, GRE, PPTP, L2TP/L2TP over IPSec VPNs (OpenVPN/DMVPN/WireGuard/ZeroTier optional), stateful firewall, zone-based access control, and 802.1X/RADIUS/TACACS+

Broad Industrial Protocol & Application Support - Native Modbus industrial protocol support enables deployment across 20+ M2M/IoT verticals, including vehicle dispatch, security surveillance, etc.

Multi-WAN Backup & Load Balancing - Combines SIM cellular, wired RJ45, and WiFi client links as mutual backups, with static IP/DHCP/PPPoE dial-up and IP passthrough support, load balancing

Extended Warranty & Custom Development - Backed by a 1-year standard warranty with paid extensions up to 5 years, plus OEM/ODM customization services available across the full product line.