The E-Lins Industrial 4G routers are compact, ruggedized designed for mission-critical connectivity in the most challenging environments. It is qualified for M2M (Machine to Machine), IoT (Internet of Things) and In-Vehicle applications. With an extensive list of safety and hardening certifications, which is engineered to protect against extreme temperatures, humidity, shocks, vibrations, dust, reverse polarity, and transient voltage, which is widely used in more than twenty industrial fields, such as CCTV security surveillance, vehicle, Telemetry, vending machines, power control, AMR, traffic, oil field, weather forecast, environmental protection, street lamp control, post, bank and many other areas. The wide range of routers offered by E-Lins include dual sim 4g router, 4g router with sim card slot, 4g router external antenna, sim card router 4g lte, openwrt 4g router, gsm router 4g, bonding router etc.