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| PartNumber | WR21-U92B-DE1-SB | WR21-U92B-DE1-JF | WR21-U92B-DE1-JW |
| Description | Routers Transport WR21 | Routers HSPA+ 2 Ethernet RS232 | Routers HSPA+ 2 Ethernet RS232 |
| Manufacturer | Digi International | Digi International | Digi International |
| Product Category | Routers | Routers | Routers |
| RoHS | Y | - | - |
| Product | Cellular Routers | - | - |
| Frequency | 850 MHz, 900 MHz, 1.7 GHz, 1.9 GHz, 2.1 GHz | - | - |
| Interface Type | Ethernet, RS-232/422/485, USB | - | - |
| Operating Supply Voltage | 9 V to 30 V | - | - |
| Minimum Operating Temperature | - 35 C | - | - |
| Maximum Operating Temperature | + 70 C | - | - |
| Description/Function | HSPA + Global | - | - |
| Dimensions | 100 mm x 131 mm x 32 mm | - | - |
| Series | WR21 | WR21 | WR21 |
| Brand | Digi International | Digi International | Digi International |
| Product Type | Routers | Routers | Routers |
| Factory Pack Quantity | 1 | 1 | 1 |
| Subcategory | Ethernet & Communication Modules | Ethernet & Communication Modules | Ethernet & Communication Modules |
| Tradename | TransPort | TransPort | TransPort |
| Unit Weight | - | 1.080 lbs | 1.080 lbs |