Siretta mica series 3g amp 4g dual lan compact industrial routers siretta mica 21 umtseu acc the siretta mica 21 umtseu router is a high speed cellular router employing 3g technologymica routers are designed for use in industrial environments needing high performance and a robust enclosure as standard they are ideal for remote management telemetry condition monitoring cctv atms vending machine and other m2m applications siretta mica 21 umtseu hpsa 3g router with accessories