YJLink 4NTC expander

YJ-Link · Modbus NTC x 4 · 485-4NTC

Manufacturer: YJ-Link
Product: Modbus NTC x 4
Model: 485-4NTC
Protocol: Modbus
Package: Basic services (BASIC)
Updated: 2025-09-03
Driver ID: 334

Notes

4 channel NTC-to-Modbus/RTU transducer

Connect:
ezeio D0 -> B
ezeio D1 -> A
ezeio 0V -> GND
ezeio +V -> VCC (if powered from ezeio)

Default 9600 bps, address 1

Change address by writing to address 1
Change speed by writing to address 2
1 = 9600, 3 = 19200

Registers 8

#	Name	Unit
1	Temperature 1	`°C`
2	Temperature 2	`°C`
3	Temperature 3	`°C`
4	Temperature 4	`°C`
5	Temperature 1	`°F`
6	Temperature 2	`°F`
7	Temperature 3	`°F`
8	Temperature 4	`°F`

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