Compare Quectel Wireless EC21-J Vs Quectel Wireless EM06-J
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| Model | EC21-J | EM06-J |
| Price | $38.80 | $75.09 |
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| Manufacturer | Quectel Wireless | Quectel Wireless |
| Form Factor | LCC Castellation | M.2 (NGFF) |
| Dimensions | 39 x 32 x 24 mm | 42 x 30 x 2.3 mm |
| Surface Area | 1248 sq. mm | 1260 sq. mm |
| Volume | 29952 cubic mm | 2898 cubic mm |
| Technologies | LTE | UMTS, HSDPA, HSPA+, LTE |
| Max. Upload Speed | 5 Mbps | 50 Mbps |
| Max. Download Speed | 10 Mbps | 300 Mbps |
| GSM Bands | N/A | N/A |
| WCDMA Bands | N/A | B1 (2100), B3 (1800 DCS), B6 (800), B8 (900 GSM), B19 (800 Japan) |
| LTE Bands | B1 (2100), B3 (1800+), B8 (900 GSM), B18 (800 Lower), B19 (800 Upper), B26 (850+) | B1 (2100), B3 (1800+), B8 (900 GSM), B18 (800 Lower), B19 (800 Upper), B26 (850+), B28 (700 APT), B41 (TD 2600+) |
| EVDO Bands | N/A | N/A |
| 1xRTT Bands | N/A | N/A |
| Interfaces | ADC, I2C, SIM, SPI, UART, USB | USB |
| GPS Support | No | Yes |
| GNSS Support | No | Yes |
| 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 | KDDI |
| Certifications | Jate, Telec | Jate, Telec |