Knowledge Base › Gateways / Data Loggers
EBYTE NB144S
Manufacturer documented GLOBAL
Identity
| category | gateways |
| manufacturer | EBYTE |
| manufacturer_part_number | NB144S |
| model | NB144S |
| mpn | NB144S |
| product_family | NB |
| product_status | active |
| region | GLOBAL |
| series | NB |
| variant | — |
Electrical
| galvanic_isolation |
not stated
NB144S official product page (cdebyte.com) — isolation is not printed on the NB144S product page
|
| input_voltage |
DC 8~28V (Phoenix terminal or DC jack)
NB144S official product page (cdebyte.com) — port/pin block 'Power input'
|
| supply_voltage | 100-240 V AC |
| transparent_transmission |
two-way transparent data transmission from 4-way serial port to Ethernet port
NB144S official product page (cdebyte.com) — product introduction paragraph
|
Physical / mechanical
| dimensions |
198 x 109 x 26.5 mm (LxWxH)
NB144S official product page (cdebyte.com) — row 'Product Size'
|
| enclosure_treatment |
three-proof coating: Anti-Fungal, Anti-Humidity, Anti-Salt Spray
NB144S official product page (cdebyte.com) — product introduction paragraph
|
| weight |
530 g +/- 5 g
NB144S official product page (cdebyte.com) — row 'Product Weight'
|
Installation
| mounting |
Positioning hole installation
NB144S official product page (cdebyte.com) — row 'Installation Method'
|
Environment
| ip_rating | IP20 |
| operating_humidity |
5% ~ 95% RH (no condensation)
NB144S official product page (cdebyte.com) — row 'Operating Humidity'
|
| operating_temperature |
-40 ~ +85 degC
NB144S official product page (cdebyte.com) — row 'Operating Temperature'
|
| operating_temperature_max_c | 60.0 |
| operating_temperature_min_c | -25.0 |
Interfaces & connectors
| device_type | 4-port serial device server / Modbus gateway (PoE) |
| ethernet_ports |
1 (standard RJ45)
NB144S official product page (cdebyte.com) — port block 'Ethernet: Standard RJ45 interface'
|
| ethernet_rate |
not stated
NB144S official product page (cdebyte.com) — no 10M/100M figure is printed on the NB144S product page
|
| home_assistant_modbus_tcp_suitable | True |
| home_assistant_suitability_basis | The official product introduction states verbatim: 'The device has ModBus gateway function, supports Modbus TCP to RTU, and supports auto polling.' That is a documented Modbus TCP server answering from Modbus RTU devices on the serial side, which is what a standard Modbus TCP client such as Home Assistant's modbus integration needs. Printed in the product introduction paragraph of the NB144S product page. Mode names are not published. |
| interfaces | RS485, Ethernet, Wi-Fi |
| modbus_gateway |
ModBus gateway function, supports Modbus TCP to RTU, supports auto polling
NB144S official product page (cdebyte.com) — product introduction paragraph, verbatim
|
| poe |
PoE supported (PoE standard/class not stated)
NB144S official product page (cdebyte.com) — product introduction - 'supports POE power supply'; port block 'PoE support: Yes'
|
| rs232 |
true
NB144S official product page (cdebyte.com) — row 'Interface Signal'
|
| rs422 |
true
NB144S official product page (cdebyte.com) — row 'Interface Signal'
|
| rs485 |
true
NB144S official product page (cdebyte.com) — row 'Interface Signal'
|
| serial_baud_rate |
2400 ~ 115200 bps (default 115200)
NB144S official product page (cdebyte.com) — row 'Baud Rate'
|
| serial_ports |
4
NB144S official product page (cdebyte.com) — product introduction - '4-way serial port server'; Pin/port block 'Serial ports: 4-way'
|
| serial_standard |
RS485, RS422, RS232
NB144S official product page (cdebyte.com) — row 'Interface Signal' - 'RS485/RS422/RS232'; port block notes RS232 on DB9 connectors and RS422/RS485 on Phoenix terminals
|
| supported_devices_max | 32 |
Documents
manufacturer-document
NB144S official product page (cdebyte.com)
product-page
NB144S official product page (cdebyte.com)