3G Gateway

The FlatMesh 3G Gateway is a fully integrated unit which provides all the functionality required to operate a FlatMesh wireless sensor network in a remote location.

No fixed IP address is required for the cellular service; the Gateway simply initiates the connection with the FlatMesh Web Monitor software over the Internet.

Key benefits

  • Integrated Five Band UMTS/HSPA+ and Quad Band GSM/GPRS/EDGE Modem
  • Integrated solar charging circuit connected to internal lithium-ion chargeable battery pack (no external battery pack)
  • Fully operational, including FlatMesh and cellular radios, for three weeks (typical) on internal battery
  • On-board industrial-grade flash memory card for data buffering and backup
  • Incorporates bracket for mounting to pole; wall mounting kit also available
  • Waterproof connection to solar panel or other DC power supply
  • All components waterproof to IP67
  • Firmware is remotely upgradeable over the air reducing costly site visits
  • Extended temperature range battery option available for extreme conditions
  • Micro-USB connector for maintenance and local data access

Physical specifications

Parameter Value
*Approximate values
Dimensions excluding antennas 218 x 68 x 126 mm
Dimensions including antennas 390 x 68 x 126 mm
Total Mass 1.1 kg*
Housing Material Die cast aluminium body

ASA polymer lid rated to UL94HB

Die cast aluminium lid optional

International Protection Marking IP67
Mounting Options Pole mount integrated with enclosure

Wall mount bracket available separately

Operating Temperature Range -30°C to +75°C

FlatMesh Radio Specifications

Parameter Value
* Consult with Senceive for your application
Communication Type Proprietary FlatMesh v3 Mesh Networking Protocols

IEEE 802.15.4 compliant

Frequency Band 2400 – 2485 MHz ISM Band
Maximum Transmit Power (EN 300 328 v1.8.1) 6.2dBm
Maximum Antenna Gain 4dBi
Range Up to 300m depending on the environment*
Maximum Network Size Typically, up to 100 nodes

Consult with Senceive to determine the optimal system configuration

Cellular Radio Specifications

Parameter Value
Frequency Bands for GSM/GPRS/EDGE 850 / 900 / 1800 / 1900 MHz
Frequency Bands for UMTS/HSPA+ 800 / 850 / 900 / 1900 / 2100 MHz
Output Power Class 4 (+33dBm) for EGSM850 / EGSM900

Class 1 (+30dBm) for GSM1800 / GSM1900

Class E2 (+27dBm) for GSM 850/900 8-PSK

Class E2 (+26dBm) for GSM 1800/1900 8-PSK

Class 3 (+24dBm) for UMTS 800/850/900/1900/2100,


Maximum Antenna Gain +3.5dBi
Supported Sim Cards 3V and 1.8V

Tilt Sensor Specifications

Parameter Value
Resolution 0.001° (0.0175mm/m)
Accuracy ±0.003° (0.053mm/m)

Internal Battery (Standard)

Parameter Value
Battery Type Lithium Ion, rechargeable
Nominal Voltage 3.6V
Nominal Capacity 8800mAh
Typical Runtime without charge 21 days
Charging Temperature Range 0°C to +40°C

Internal Battery (Extended Temperature)

Parameter Value
Battery Type Lithium Ion, rechargeable
Nominal Voltage 3.6V
Nominal Capacity 8000mAh
Typical Runtime without charge 19 days
Charging Temperature Range -30°C to +60°C

Power Input

Parameter Value
Recommended Solar Panel Type 12V 20W
Target Voltage for MPPT 15.0V

Mains Power Adaptor

Parameter Value
Dimensions 99 x 42 x 31 mm
Operating Temperature Range -20°C to +60°C
Input Voltage Range 90-264 VAC
Input Frequency 47-63 Hz
Input Power 0.5-23W


  • Tested to conformity with all the essential requirements of R&TTE Directive 1999/5/EC and RoHS Directive 2011/65/EU
  • Network Rail Acceptance PA05/04146
  • London Underground Approved Product ID 2073

Ordering Information and Accessories

Model Description
FM3G-HSPA FlatMesh 3 HSPA+/3G Gateway
FM3G-HSPA-T FlatMesh 3 HSPA+/3G Gateway with Extended Temperature Battery
FP-SP20 20W Solar Panel Pre-fitted with 2 metres of cable, includes pole mount kit
FP-AC20-UK 20W Power Adaptor with UK Power Plug
FP-AC20-EU 20W Power Adaptor with European Power Plug
FP-AC20-309Y44 20W Power Adaptor with IEC60309 Yellow Power Plug, IP44 rated
FF-GW-WB Wall Bracket for 3G Gateway

Can be screwed directly to a flat surface or attached with straps to a pole or other structure

FC-GA Gateway Perspex Cover

Clear plastic cover to protect gateway enclosure and antennas from frontal impact, includes masonry anchors

FA-3G-OMNI Waterproof Omnidirectional antenna for GSM / 3G

For use when the gateway location has poor cellular reception Includes 3m cable and pole mount bracket