Lantronix A31M0 — LTE Adhesive Remote Antenna, 3 m RG174 Cable, SMA Male

The Lantronix A31M0 is a single LTE antenna for remote mounting. Lantronix lists it as a mobility accessory for its Industrial IoT gateways, modems and routers, and names the X300 Series as the compatible product line. In the X300 Series part-number table it appears as "X303 Only". That makes it a direct choice for teams that run X303 units and need to move the LTE antenna off the device and into a better spot. The antenna is rated at 2 dBi gain and mounts with adhesive, so it can go on a flat surface without drilling. It connects through a 3000 mm (about 9.8 ft) RG174 coaxial cable with an SMA male connector. That length is enough to route the antenna from an equipment enclosure, cabinet or desk-level install to a nearby window, panel or wall where cellular signal is stronger. For field-operations leads and IT managers, a remote antenna is a practical way to improve LTE reception without moving the device itself. The gateway can stay secured inside a cabinet or rack while the antenna sits where it can reach the carrier network. The A31M0 ships as a single bulk-packaged unit.