Xian Votesen Electronic Technology Co., Ltd.
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RS485 Modbus RTU Protocol SHT30 Humidity Temperature Transmitter
Votesen VTH300-T Humidity and Temperature Transmitter has excellent reliability, high precision, and interchangeability. It adopts the 100% original import Sensirion industrial-grade high-precision temperature and humidity sensor. The default temperature and humidity sensor of this transmitter are SHT30, you can customize other types of SHT Sensirion chip according to your needs, such as SHT20, SHT21, SHT25, SHT31, and SHT35.
Its RS485 hardware interface adopts the lightning protection design. The protocol layer is the standard industrial Modbus RTU protocol. When you connect the RS485 hardware interface, the sensor will output the temperature and humidity through the serial port adjustment tool. The RS485 communication distance can be up to 1000 meters. The three major parts of the transmitter: input power supply, temperature & humidity measurement unit, and signal output are completely isolated. Thus our product is more safe and reliable, beautiful in appearance, and easy to install.
| Power Supply | DC5-30V |
| Output Signal | RS485 Signal |
| Communication Protocol | Modbus-RTU Protocol |
| RS485 Communication Distance | Up to 1000 Meters |
| Mailing Address | 1~247 can be set, default 1 |
| Baud Rate | Can be set, default 9600 8 bit data, 1 bit stop, no check |
| Temperature Range | -40℃~+60℃ |
| Temperature Precision | ±0.5℃ (25℃) |
| Temperature Resolution | 0.1℃ |
| Humidity Range | 0%RH~80%RH |
| Humidity Precision | ±3%RH |
| Humidity Resolution | 0.1%RH |
| Equipment Power Consumption | ≤2W |
| Product Size | 66*46*29mm |
| Product Weight | 41g |
★ 100% Original Import Sensirion Sensor
★ High Accuracy Measuremen
★ Strong Anti-Interference Ability
★ Long-Term Stability
★ Fast Response
★ Standard Industrial RS485 Signal Output
★ Modbus RTU Protocol
★ Distance Up to 1000 Meter
★ 35mm Standard Rail Installation
★ Wide Voltage Supply
★ IoT Applications
★ Engine Room
★ Warehouse
★ Greenhouse
★ Laboratory
★ Aquaculture
★ Musuem
★ Electrical Cabinet
★ Computer Room Monitoring
★ Server Room
※0x03: Read keep register
※0x04: Read input register
※0x06: Write a single keep register
※0x10: Write more keep register
| Register Type | Register Address | Register Contents | Number of Bytes |
| Input Register | 0x0001 | Temperature | 2 |
| 0x0002 | Humidity | 2 | |
| Keep Register | 0x0101 | Device Address | 2 |
| (1~247) | |||
| 0x0102 | Baud Rate | 2 | |
| 0:9600 | |||
| 1:14400 | |||
| 2:19200 | |||
| 0x0103 | Temperature Correction(/10) | 2 | |
| -10.0~10.0 | |||
| 0x0104 | Humidity Correction(/10) | 2 | |
| -10.0~10.0 |
To customize the most suitable humidity temperature transmitter for your application, kindly let us know your requirements:
1. SHT Sensor Chip:
2. Order Quantity: