Stealth M2M X6 Direct Connect Booster Kit With SMA Connector and 2" Magnetic Antenna

Stealth M2M X6 4G LTE Booster Kit

  • 15 dB gain
  • For modems or machines with female SMA connector

Note: Does not support Sprint bands 26 (lower 800MHz) and band 41 (2500 MHz)

BEFORE USE, you MUST REGISTER THIS DEVICE with your wireless provider and have your provider’s consent. Most wireless providers consent to the use of signal boosters. Some providers may not consent to the use of this device on their network. If you are unsure, contact your provider. You MUST operate this device with approved antennas and cables as specified by the manufacturer. Antennas MUST be installed at least 20 cm (8 inches) from any person. You MUST cease operating this device immediately if requested by the FCC or a licensed wireless service provider.

MSRP $299.99

All SmoothTalker BTUX615MS81H kits include

Stealth M2M X6 Direct Connect Booster

SKU: BTUX615xaa

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120V Wall Power Supply


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Booster Input Cable 3ft/100cm MCT Female to Fme Female


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SMA Male to FME Male Barrel Co-ax Connector


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2" MCT Small Mag


2" Mast w/2" Mag Mct

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Description Type Link
User Manual (Canada) PDF Download
User Manual (United States) PDF Download

Stealth M2M signal boosters are are the most powerful M2M boosters on the market. They will keep your cellular data device connected further away from the tower than any other direct connect M2M booster. Designed to be directly connected to cellular data modems, tracking devices, monitoring devices and other cellular data devices. Stealth M2M are self monitoring to ensure signal reliability and increase data speed.

How it works:

The Booster captures the signal outside the building and boosts it to the device. It takes the weak signal from your device and boosts it back to the tower. Boosts both voice and data simultaneously.

Where can this booster be used:

BOOST CELLULAR Applications within the following categories

  • Telecommunication - Cellular Modems connected to networks
  • Manufacturing - supply chain / inventory management factory automation
  • Light Industrial - sensor monitoring / remote access control utilities / meters
  • Transportation - asset tracking / logistics management
  • Retail - point-of-sale / kiosk / digital content signage
  • Telematics - aftermarket / In-vehicle solutions
  • Real Estate - building automation
  • Security - video surveillance / alarm

How Large an Area will it Cover:

Coverage area is effected by two things. Outside signal and booster gain. Generally the booster will cover the whole space in a car or pick up truck. In the case where it is used in a boat or RV the range will be limited by the outside signal level.

Assessing your outside cellular signal level

How Far from the Tower

Stealth M2M X6 15dB is the most powerful wireless booster on the market and can keep you connected up to 35 mi/60 km . from the nearest tower.

Use Signal Bar Indicator

Use the signal bar indicator on your cellular device to approximate signal strength as per the chart above.

Note: Even if your device shows no bars or "no service" it is possible that there is enough cellular signal for a booster to achieve communication with the network.


  • Mount outside antenna in the center of the vehicle roof except in cases where a sunroof is present. In this case mount the antenna towards the back of the vehicle in the center of the metal portion of the roof.
  • Mount the inside antenna in the back of the cellular device or place in to the cradle.
  • Flashing green LED lights indicate gain reduction. If the green lights on the booster are flashing, please refer to the user manual for instructions.

STEALTHTECH TECHNOLOGY (proprietary Smoothtalker technology):

Stealth M2M X6 15dB amplifiers and boosters use STEALTH TECH® to automatically control gain to eliminate feedback loop (oscillation) and strong signal overload from nearby towers. This will keep your booster working without unexpected shutdowns and at maximum efficiency.