Compare Quectel Wireless EC21-J Vs Sierra Wireless HL7539
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| Model | EC21-J | HL7539 |
| Price | $38.80 | $ |
| Buy | ||
| Manufacturer | Quectel Wireless | Sierra Wireless |
| Form Factor | LCC Castellation | LGA |
| Dimensions | 39 x 32 x 24 mm | 22 x 23 x 2.5 mm |
| Surface Area | 1248 sq. mm | 506 sq. mm |
| Volume | 29952 cubic mm | 1265 cubic mm |
| Technologies | LTE | LTE |
| Max. Upload Speed | 5 Mbps | 50 Mbps |
| Max. Download Speed | 10 Mbps | 150 Mbps |
| GSM Bands | N/A | N/A |
| WCDMA Bands | N/A | N/A |
| LTE Bands | B1 (2100), B3 (1800+), B8 (900 GSM), B18 (800 Lower), B19 (800 Upper), B26 (850+) | B1 (2100), B19 (800 Upper), B21 (1500 Upper) |
| EVDO Bands | N/A | N/A |
| 1xRTT Bands | N/A | N/A |
| Interfaces | ADC, I2C, SIM, SPI, UART, USB | ADC, GPIO, SIM, UART, USB |
| GPS Support | No | No |
| GNSS Support | No | No |
| Voice Support | Yes, PCM, Analog | No |
| Automotive Support | No | No |
| Temperature | -40 C to 85 C | -40 C to 85 C |
| Carrier Approvals | KDDI, NTT DoCoMo | NTT DoCoMo |
| Certifications | Jate, Telec | JRF/JPA |