The 7Semi ENV-485 Probe is a compact, multi-parameter environmental sensing module designed to monitor key air quality and climate conditions. It measures temperature, relative humidity, barometric pressure, and gas resistance, making it a versatile solution for both industrial and indoor environments.
Built for continuous operation, the module delivers accurate and stable readings through a robust RS-485 Modbus RTU interface. All sensing, compensation, and communication processes are handled internally, ensuring consistent data output and seamless integration with any Modbus master system.
Its durable construction and digital interface make it well-suited for long-term deployment in applications such as HVAC systems, building automation, smart agriculture, data centers, and general environmental monitoring.
Key Features
- 4-in-1 Environmental Sensing
- Temperature
- Relative Humidity
- Barometric Pressure
- Gas Resistance
- Industrial Communication Interface
- Standard Modbus RTU over RS-485
- 2-wire, half-duplex communication
- Configurable Operation
- Adjustable measurement interval for optimized performance and power usage
- Air Quality Indicator
- Measures gas sensor resistance (Ω)
- Lower resistance (Rs) → Higher VOC concentration → Poorer air quality
- Reliable & Self-Contained
- Internal processing, scaling, and compensation
- Stable and consistent output without external calibration
Wiring Guide
Resources
- Temperature Range:
- -40°C to +85°C
- Humidity Range:
- 0% to 100% RH
- Accuracy (Temp @25°C):
- ±0.5°C
- Accuracy (Humidity @25°C):
- ±3% RH
- Resolution:
- 0.1°C / 0.1% RH
- Pressure:
- 300–1100 hPa
- Accuracy (Pressure):
- ±1 hPa
- Gas / Air Quality:
- 32-bit Gas Resistance Output
- Power Supply:
- 9–36V DC
- Output Interface:
- RS485 (Modbus RTU)
- Baud Rates:
- 9600 (default); configurable to 19200, 38400, 115200
- Probe Length:
- 150mm
- Probe Diameter:
- 15.7mm
- Cable Length:
- 2 meters
- Weight:
- 100g
- Protection:
- Breathable, dust-proof
