pH electrode can be used for aquaculture, IoT water quality detection, with digital interface (RS485*1), can be used to measure the change of pH/ORP value in the aqueous solution system within the range, and it has standard RS485 Modbus RTU protocol interface function, Can communicate with the host computer remotely
| Product | Digital pH sensor |
| Model | SUP-PH8001 |
| Measurement range | 0.00-14.00pH; ±1000.0mV |
| Resolution | 0.01pH,0.1mV |
| Heat resistance | 0 ~ 60℃ |
| Output | RS485 (MODBUS-RTU) |
| ID | 9600，8，1，N (Standard) 1-255 |
| Power supply | 12VDC |
| Power consumption | 30mA @12VDC |
Communication interface: RS485
Port setting: 9600,N,8,1 (default)
Device address: 0x01 (default)
Protocol specification: Modbus RTU
Instruction support: 0x03 read into register
0x06 write register | 0x10 write register continuously
Register data format
| Address | Data name | Conversion factor | Status |
| 0 | Temperature | [0.1℃] | R |
| 1 | PH | [0.01pH] | R |
| 2 | PH.mV | [0.1mV] | R |
| 3 | PH. Zero | [0.1mV] | R |
| 4 | PH. slope | [0.1%S] | R |
| 5 | PH. Calibration points | – | R |
| 6 | System status. 01 | 4*bits 0xFFFF | R |
| 7 | System status. 02 | 4* bits 0xFFFF | R/W |
| 8 | User command address | – | R |
| 9 | User commands. Results | [0.1mV] | R |
| 11 | ORP | [0.1mV] | R |
