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| Part Number | ELS81-E REL.1 | ELS81-US | ELS81-E |
| Manufacturer | Telit Cinterion | Telit Cinterion | Telit Cinterion |
| Series | Cinterion ELS81 | - | - |
| Package/Case | 122-LGA Module | Module | - |
| Packaging | Tape & Reel (TR) | Tape & Reel (TR) | Tape & Reel (TR) |
| Product Status | Obsolete | Obsolete | Obsolete |
| Programmable | Not Verified | Not Verified | Not Verified |
| RF Family/Standard | Cellular | Cellular | - |
| Protocol | EDGE, GPRS, GSM, HSDPA, HSUPA, LTE, UMTS, WCDMA | GSM, HSPA, LTE, UMTS, WCDMA | - |
| Modulation | 64-QAM | - | - |
| Frequency | 700MHz, 800MHz, 900MHz, 1.8GHz, 2.1GHz | 700MHz, 850MHz, 1.7GHz, 1.9GHz, 2.1GHz | - |
| Data Rate | 150Mbps | 150Mbps | - |
| Power - Output | 33dBm | - | - |
| Sensitivity | - | - | - |
| Serial Interfaces | ADC, GPIO, I2C, SPI, UART, USB | I2C, PWM, SPI, USB | - |
| Antenna Type | Antenna Not Included | Antenna Not Included | - |
| Utilized IC / Part | Intel XMM 7160 | - | - |
| Memory Size | 30MB Flash, 18MB RAM | 31MB Flash, 18MB RAM | - |
| Voltage - Supply | 3V ~ 4.5V | 3V ~ 4.5V | - |
| Current - Receiving | - | - | - |
| Current - Transmitting | 14mA ~ 2400mA | - | - |
| Mounting Type | Surface Mount | Surface Mount | - |
| Operating Temperature | -40°C ~ 90°C | -40°C ~ 85°C | - |
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