OnCell G2111/OnCell G2151I

Industrial quad-band GSM/GPRS modems

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Features and Benefits 

  • Quad-band GSM/GPRS 850/900/1800/1900 MHz
  • DIN-rail housing and wall-mounting housing
  • 2.5 kV RMS isolation for 1 min. for all serial signals (G2151I only)
  • LED indicators for GSM/GPRS and data transmission status
  • Extended operating temperature from -25 to 70°C (G2111-T only)


The OnCell G2111/G2151I series of industrial quad-band GSM/GPRS modems are designed to transmit data and short messages (SMS) over GSM/GPRS mobile networks. The modems can be used to increase the efficiency of maintenance and communication, but do not require extensive training. In addition, the modems can be mounted on a DIN rail or wall. The OnCell G212111/G2151I series modems accept a 12 to 48 VDC power input, making them suitable for use with a variety of field power sources. The serial ports feature 15 kV ESD line protection to protect the products from harmful electrical discharge, and separate RS-232 and RS-422/485 interfaces are built into the OnCell G2151I, each with 2.5 kV RMS isolation protection for one minute. The two serial interfaces on the OnCell G2151I make it ideal for attaching all kinds of devices, such as stand-alone controllers, PC COM ports, and multi-dropped electric meters. In addition, the OnCell G2111-T has an extended operating temperature (-25 to 70°C) design that makes it suitable for heavy industrial use.

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Cellular Interface
Standards GSM/GPRS
Band Options Quad-band 850/900/1800/1900 MHz
GPRS Multi-slot Class Class 10
GPRS Terminal Device Class Class B
GPRS Coding Schemes CS1 to CS4
CSD Data Transmission Rate Up to 14,400 bps
Tx Power GSM 1800/1900: 1 W
EGSM 900/GSM 850: 2 W
Cellular Antenna Connectors 1, SMA (female)
SIM Interface
Number of SIMs 1
SIM Control 3 V
Serial Interface
Number of Ports 1
Serial Standards OnCell G2111: RS-232 (DB9 female connector)
OnCell G2111-T: RS-232 (DB9 female connector)
OnCell G2151I: RS-232 (DB9 female connector), RS-422/485 (5-pin terminal block connector)
ESD Protection 15 kV (G2111 only)
Optical Isolation 2.5 kV (G2151I only)
Serial Communication Parameters
Data Bits 8
Stop Bits 1
Parity None
Flow Control RTS/CTS
Baudrate 300 bps to 230.4 kbps
Serial Signals
RS-422 Tx+, Tx-, Rx+, Rx-, GND
RS-485-4w Tx+, Tx-, Rx+, Rx-, GND
RS-485-2w Data+, Data-, GND
Physical Characteristics
Housing ABS + PC, providing IP30 protection
Weight 155 g (0.34 lb)
Dimensions 27 x 123 x 79 mm (1.06 x 4.84 x 3.11 in)
Environmental Limits
Operating Temperature OnCell G2111/G2151I: -20 to 55°C (-4 to 131°F)
OnCell G2111-T: -25 to 70°C (-22 to 158°F)
Storage Temperature -40 to 75°C (-40 to 167°F)
Ambient Relative Humidity 5 to 95% (non-condensing)
Power Requirements
Number of Power Inputs 1 (terminal block)
Input Voltage 12 to 48 VDC
Input Current 0.625 A @ 12 VDC; 0.16 A @ 48 VDC
Standards and Certifications
Safety UL 60950-1
EMC EN 55032/24
EMI CISPR 32, FCC Part 15B Class A
EMS IEC 61000-4-2 ESD: Contact: 4 kV; Air: 8 kV
IEC 61000-4-3 RS: 80 MHz to 1 GHz: 3 V/m
IEC 61000-4-4 EFT: Power: 0.5 kV
IEC 61000-4-5 Surge: Power: 1 kV
IEC 61000-4-6 CS: 3 V
IEC 61000-4-8
Radio FCC Part 22H, FCC Part 24E, EN 301 489-1, EN 301 489-7, EN 301 511
MTBF (mean time between failures)
Time OnCell G2111/G2111-T: 925,000 hrs
OnCell G2151I: 864,000 hrs
Standard Telcordia SR332
Warranty Period 5 years
Details See www.moxa.com/warranty

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Available Models

  Model No. Description
OnCell G2111 1-port RS-232 GSM/GPRS IP modem, -20 to 55°C operating temperature
OnCell G2151I 1-port RS-232/422/485 GSM/GPRS IP modem, isolation, -20 to 55°C operating temperature
OnCell G2111-T 1-port RS-232 GSM/GPRS IP modem, -25 to 70°C operating temperature

Optional Accessories

Mounting Kits
  Model No. Description
DK35A DIN-Rail Mounting Kit (35 mm)
Cellular Antennas
  Model No. Description
ANT-CQB-AHSM-03-3m Quad-band GSM/GPRS/EDGE, 3 dBi, omni-directional, magnetic base antenna
ANT-CQB-ASM-01 Quad-band GSM/GPRS/EDGE, 1 dBi, omni-directional, rubber duck antenna
ANT-CQB-AHSM-00-3m Quad-band GSM/GPRS/EDGE, 0 dBi, omni-directional, magnetic base antenna
ANT-CQB-AHSM-05-3m Quad-band GSM/GPRS/EDGE, 5 dBi, omni-directional, magnetic base antenna
ANT-LTE-ANF-04 Full-band GSM/GPRS/EDGE/UMTS/HSPA/LTE, 4 dBi, omni-directional IP66 outdoor antenna
ANT-WCDMA-AHSM-04-2.5m Five-band GSM/GPRS/EDGE/UMTS/HSPA, 4 dBi, omni-directional, magnetic base antenna
ANT-WCDMA-ANF-00 Five-band GSM/GPRS/EDGE/UMTS/HSPA, 0 dBi, omni-directional, outdoor antenna
ANT-WCDMA-ASM-1.5 Five-band GSM/GPRS/EDGE/UMTS/HSPA, 1.5 dBi, omni-directional, rubber duck antenna
ANT-LTE-ASM-02 GPRS/EDGE/UMTS/HSPA/LTE, 2 dBi, omni-directional, rubber duck antenna
ANT-LTEUS-ASM-01 GSM/GPRS/EDGE/UMTS/HSPA/LTE, 1 dBi, omni-directional, rubber duck antenna
Wireless Antenna Cable
  Model No. Description
A-CRF-SMSF-R3-100 Cellular magnetic-base SMA connector with 1-meter RF cable

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