4G Cellular Modem with AT Command Control Support for USB Interface
GS81 USB
Key Features & Benefits
1. High-Speed 4G (LTE) Connectivity and Multi-Network Support
2. Industrial Interface Flexibility with Robust Protection
3. AT command control compliant with GSM 07.07 and GSM 07.05 standards
4. Support to USB Interface
5. Plug-and-play design with easy-to-use serial interface
6. Industrial Power Supply Flexibility and Efficiency
7. Durable Mechanical Design and Ease of Deployment
PRODUCT CATEGORIES
Key Features & Benefits
- High-Speed 4G (LTE) Connectivity & Multi-Network Support
- Industrial Interface Flexibility with Robust Protection
- GSM 07.07/07.05–compliant AT command control with USB interface support
- Plug-and-play design with easy-to-use serial interface
- Industrial Power Supply Flexibility and Efficiency
- Durable Mechanical Design and Ease of Deployment
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PRODUCT CATEGORIES
Introduction
The GS81 USB Cellular Modem is a compact and reliable communication device designed for industrial and remote monitoring applications. It enables sending, receiving, and reading SMS, and provides internet connectivity to dataloggers and controllers through a USB interface. The modem supports all standard SMS applications used by system integrators, making it ideal for critical alerting and communication in applications such as oil & gas, industrial automation, utilities, and other mission-critical environments.
Standards
GSM Compliance: GSM phase 2/2+
Control Commands: AT commands (GSM 07.07 and 07.05)
Coding Schemes: CS1 to CS4
USB Standard: USB 2.0 Hi-Speed (480Mbits/sec) and Full Speed (12Mbits/sec) compatible
Control Commands: AT commands (GSM 07.07 and 07.05)
Coding Schemes: CS1 to CS4
USB Standard: USB 2.0 Hi-Speed (480Mbits/sec) and Full Speed (12Mbits/sec) compatible
Performance
Frequency Bands (India): LTE FDD: B1/B3/B5/B8, LTE TDD: B38/B39/B40/B41, WCDMA: B1/B8, TD-SCDMA: B34/B39, CDMA: BC0, GSM: B3/B8
Max Data Rates: LTE FDD: 150Mbps (DL) / 50Mbps (UL), LTE TDD: 130Mbps (DL) / 35Mbps (UL), DC-HSDPA: 42Mbps (DL , HSUPA: 5.76Mbps (DL) , WCDMA: 384Kbps (DL) / 384Kbps (UL), TD-SCDMA: 4.2Mbps (DL) / 2.2Mbps (UL), EVDO: 3.1Mbps (DL) / 1.8Mbps (UL), 1x Advanced: 307.2Kbps (DL/UL) , EDGE: 296Kbps (DL) / 236.8Kbps (UL), GPRS: 107Kbps (DL) / 85.6Kbps (UL)<, CSD: up to 14.4kbps
Output Power: < 35 dBm
Sensitivity: < -110 dBm
Max Data Rates: LTE FDD: 150Mbps (DL) / 50Mbps (UL), LTE TDD: 130Mbps (DL) / 35Mbps (UL), DC-HSDPA: 42Mbps (DL , HSUPA: 5.76Mbps (DL) , WCDMA: 384Kbps (DL) / 384Kbps (UL), TD-SCDMA: 4.2Mbps (DL) / 2.2Mbps (UL), EVDO: 3.1Mbps (DL) / 1.8Mbps (UL), 1x Advanced: 307.2Kbps (DL/UL) , EDGE: 296Kbps (DL) / 236.8Kbps (UL), GPRS: 107Kbps (DL) / 85.6Kbps (UL)<, CSD: up to 14.4kbps
Output Power: < 35 dBm
Sensitivity: < -110 dBm
Interface
Primary Data Port: USB (Mini USB connector)
Antenna Connector: 50Ω SMA Female Connector
SIM Holder: Push Type for UIM/SIM 1.8V/3V
Power Connector: Screw type 3 pin connector (3.81mm pitch)
Antenna Connector: 50Ω SMA Female Connector
SIM Holder: Push Type for UIM/SIM 1.8V/3V
Power Connector: Screw type 3 pin connector (3.81mm pitch)
Indicator
LED Display: Network status, Power ON, USB
Cables & Distance
USB Cable: Mini USB cable included.
Electrical
Power Supply: 24V DC (Operating Range: 9 to 40V DC)
Power Consumption: 0.8W @ 24V DC (Idle, network registered), 1.6W @ 24V DC (Data/Voice mode)
Protections: Reverse Polarity, Over Voltage, Over Current, 25KV ESD (USB), 5KV Isolation (USB)
Power Consumption: 0.8W @ 24V DC (Idle, network registered), 1.6W @ 24V DC (Data/Voice mode)
Protections: Reverse Polarity, Over Voltage, Over Current, 25KV ESD (USB), 5KV Isolation (USB)
Physical Characteristics
Enclosure: Metallic with DIN rail mounting
Dimensions (Enclosure only): 94 x 80 x 34 mm
Dimensions (Enclosure only): 94 x 80 x 34 mm
Environment
Operating Temperature: -20° to 70°C
Storage Temperature: -40° to 85°C
Relative Humidity: Up to 95% Rh (non-condensing)
EMI/EMC Tests: Product is designed to meet various EMI/EMC standards
Storage Temperature: -40° to 85°C
Relative Humidity: Up to 95% Rh (non-condensing)
EMI/EMC Tests: Product is designed to meet various EMI/EMC standards
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