Compare Sierra Wireless HL8528 Vs Huawei EM820W
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| Model | HL8528 | EM820W |
| Price | $28.15 | $39 |
| Buy | ||
| Manufacturer | Sierra Wireless | Huawei |
| Form Factor | LGA | Mini PCI Express |
| Dimensions | 22 x 23 x 2.5 mm | 51 x 30 x 4.4 mm |
| Surface Area | 506 sq. mm | 1530 sq. mm |
| Volume | 1265 cubic mm | 6732 cubic mm |
| Technologies | GSM, GPRS, UMTS, EDGE, HSDPA | GSM, GPRS, UMTS, EDGE, HSDPA, HSPA+ |
| Max. Upload Speed | 5.76 Mbps | 5.76 Mbps |
| Max. Download Speed | 7.2 Mbps | 21 Mbps |
| GSM Bands | 850, 1900 MHz | 850, 900, 1800, 1900 MHz |
| WCDMA Bands | B2 (1900 PCS), B5 (850) | B1 (2100), B2 (1900 PCS), B8 (900 GSM), B26 (850+) |
| LTE Bands | N/A | N/A |
| EVDO Bands | N/A | N/A |
| 1xRTT Bands | N/A | N/A |
| Interfaces | ADC, GPIO, SIM, UART | UART, USB |
| GPS Support | No | Yes |
| GNSS Support | No | Yes |
| Voice Support | PCM, Analog | No |
| Automotive Support | No | No |
| Temperature | -40 C to 85 C | -20 C to 70 C |
| Carrier Approvals | AT&T | Not Available |
| Certifications | FCC, IC, PTCRB | CCC, CE, FCC, GCF, IC, PTCRB, ROHS |