R220 OpenWrt 4G/3G Router Wlink R220 is the 4G / 3G router with OpenWrt OS, OpenWrt provides minimal firmware with support for add-on packages. Datasheet Application Firmware FeaturesIndustrial robust design and compact metal housing, heat endurance and radiation abilityHigh data speed via 4G and 3G network, 2G backward compatibleStrong electromagnetic interference ResistanceSupport DIN-Rail Mounting for industrialBuilt-in watch dog, Multi-link detection802.11b/g/n Wi-Fi support, 300Mbps data rate2x Digital Input(DI), 1x Digit al Output (DO), suit for I/O communicationMT7628 MIPS24K 580MHz ProcessorStandard equipped with Dual SIM Single Module for Failover or Backup between two networkAlways online, reboot automatically if disconnected to ensure continual connectionFlash 16MBDDR2:16Bit 64MBStorage 8G EMMCShock and vibration resistan