[Interfaces]：Serial (RS485/RS232), Ethernet (RJ45)
[Operating Voltage]： DC 8-28V
[Network Protocols]：IP, TCP/UDP, IPv4, ICMP, APR, DHCP, DNS, HTTP, MQTT
[Installation Method]：Positioning Hole
[Size]：198*109*26.5mm
[Product weight]：520 ± 5g
[Introduction]：NB183E-V2 is Ebyte's second-generation 8-channel serial port server. It integrates a TCP/IP protocol stack, enabling two-way transparent transmission of serial-to-Ethernet data, Modbus protocol conversion, and serial device cloud connectivity. This serial port server supports host computer configuration and is widely used in industries such as computer room monitoring, environmental monitoring, intelligent transportation, gate control, and smart express lockers. It is coated with conformal coating for mildew resistance, moisture resistance, and salt spray resistance.
Official Store
| Serial number | name | Function | illustrate |
| 1 | RS485-1-A | Channel 1-RS485 port A | 3.81mm Phoenix terminal |
| 2 | RS485-1-B | Channel 1-RS485 port B | 3.81mm Phoenix terminal |
| 3 | RS485-1-G | Channel 1-RS485 interface G | 3.81mm Phoenix terminal |
| 4 | RS485-2-A | Channel 2-RS485 interface A | 3.81mm Phoenix terminal |
| 5 | RS485-2-B | Channel 2-RS485 interface B | 3.81mm Phoenix terminal |
| 6 | RS485-2-G | Channel 2-RS485 interface G | 3.81mm Phoenix terminal |
| 7 | RS485-3-A | Channel 3-RS485 port A | 3.81mm Phoenix terminal |
| 8 | RS485-3-B | Channel 3-RS485 port B | 3.81mm Phoenix terminal |
| 9 | RS485-3-G | Channel 3-RS485 interface G | 3.81mm Phoenix terminal |
| 10 | RS485-4-A | Channel 4-RS485 interface A | 3.81mm Phoenix terminal |
| 11 | RS485-4-B | Channel 4-RS485 interface B | 3.81mm Phoenix terminal |
| 12 | RS485-4-G | Channel 4-RS485 interface G | 3.81mm Phoenix terminal |
| 13 | RS485-5-A | Channel 5-RS485 port A | 3.81mm Phoenix terminal |
| 14 | RS485-5-B | Channel 5-RS485 port B | 3.81mm Phoenix terminal |
| 15 | RS485-5-G | Channel 5-RS485 interface G | 3.81mm Phoenix terminal |
| 16 | RS485-6-A | Channel 6-RS485 interface A | 3.81mm Phoenix terminal |
| 17 | RS485-6-B | Channel 6-RS485 interface B | 3.81mm Phoenix terminal |
| 18 | RS485-6-G | Channel 6-RS485 interface G | 3.81mm Phoenix terminal |
| 19 | RS485-7-A | Channel 7-RS485 port A | 3.81mm Phoenix terminal |
| 20 | RS485-7-B | Channel 7-RS485 port B | 3.81mm Phoenix terminal |
| 21 | RS485-7-G | Channel 7-RS485 interface G | 3.81mm Phoenix terminal |
| 22 | RS485-8-A | Channel 8-RS485 interface A | 3.81mm Phoenix terminal |
| 23 | RS485-8-B | Channel 8-RS485 interface B | 3.81mm Phoenix terminal |
| 24 | RS485-8-G | Channel 8-RS485 interface G | 3.81mm Phoenix terminal |
| 25 | - | Negative terminal of DC 8-28 V | DC 8-28 V, 2*5.08mm Phoenix terminal input; cannot be powered by the socket at the same time; |
| 26 | + | Positive terminal of DC 8-28 V | DC 8-28 V, 2*5.08mm Phoenix terminal input; cannot be powered by the socket at the same time; |
| 27 | DC-IN | DC power input | DC 8-28 V; straight-in round hole, outer diameter 5.5mm, inner diameter 2.0mm; cannot be powered at the same time as the terminal; |
| 28 | Ethernet | Ethernet interface | Standard RJ45 Ethernet interface, 10/100M adaptive |
| 29 | Reload | Restore factory button | Press and hold for 5 seconds, then NET will light up for 5 seconds, and the device will be restored to factory settings. |
| 30 | RS232-4 | Channel 4 - RS232 interface | Standard DB9 female connector, 2-TXD, 3-RXD, 5-GND |
| 31 | RS232-3 | Channel 3 - RS232 interface | Standard DB9 female connector, 2-TXD, 3-RXD, 5-GND |
| 32 | RS232-2 | Channel 2 - RS232 interface | Standard DB9 female connector, 2-TXD, 3-RXD, 5-GND |
| 33 | RS232-1 | Channel 1-RS232 interface | Standard DB9 female connector, 2-TXD, 3-RXD, 5-GND |