Deploying a weather station in the field used to mean mounting multiple separate sensors, running multiple cables, and managing multiple calibration routines. The SenseCAP S700 V2 from Seeed Studio collapses all of that into a single compact unit that measures air temperature, relative humidity, barometric pressure, light intensity, rainfall, wind speed, and wind direction simultaneously.
At Think Robotics, it ranked ninth by revenue over the last 90 days, making it one of the strongest-selling environmental sensor products on the store. This review covers the full specifications, the technology behind each measurement channel, what the sensor is designed for, how to connect it, what the community is deploying it for, pricing, and how it compares to similar products.
What the S700 V2 Measures
Seven parameters from dedicated sensing elements inside a single housing, giving consistent co-located data without the alignment and calibration errors that come from mounting separate sensors at different heights or positions.
🌡️
Air Temperature
-40°C to +85°C
±0.1°C
💧
Relative Humidity
0 to 100% RH
±1.5% RH
🔵
Barometric Pressure
300 to 1250 hPa
±50 Pa
☀️
Light Intensity
0 to 188,000 Lux
Optical detection
🌧️
Rainfall Intensity
Optical detection
No moving parts
💨
Wind Speed
0 to 60 m/s (std)
±0.3 m/s at <10 m/s
🧭
Wind Direction
0° to 360°
Ultrasonic
🛡️
Protection
IP66 rated
80 m/s survival
Key Specifications
Parameter
Specification
Air Temp Range
-40°C to +85°C
Temp Accuracy
±0.1°C
Humidity Range
0 to 100% RH
Humidity Accuracy
±1.5% RH
Pressure Range
300 to 1250 hPa
Pressure Accuracy
±50 Pa
Light Range
0 to 188,000 Lux
Wind Speed Range
0 to 60 m/s standard, up to 75 m/s extended, 80 m/s survival
Wind Speed Accuracy
±0.3 m/s up to 10 m/s; ±3% from 10 to 50 m/s
Wind Direction
0° to 360°
Rainfall Type
Optical detection
Operating Temp
-40°C to +85°C
Protection Rating
IP66
Communication
RS485 (MODBUS-RTU) and SDI-12
Supply Voltage
5 to 30 V DC
Cable
3-meter M12 8-pin cable included
Why Ultrasonic Wind Sensing Matters
Traditional weather stations measure wind speed with a mechanical cup anemometer and direction with a rotating vane. Both have moving parts. The SenseCAP S700 V2 uses ultrasonic transducers instead, measuring how wind alters the travel time of ultrasonic pulses between sensor pairs to derive speed and direction without any moving parts involved.
S700 V2 approach
Ultrasonic Transducers
✓No mechanical wear path or moving parts to replace
✓No ice-jamming in the wind measurement system
✓No minimum starting speed threshold from static friction
✓±0.3 m/s accuracy at low wind speeds
✓80 m/s survival rating for hurricane-force conditions
Traditional approach
Cup Anemometer + Vane
!Bearings wear out over time, requiring replacement
!Cups can freeze in cold conditions, vanes can jam
!Mechanical friction introduces error at low wind speeds
!Debris accumulation can cause reading errors
!Moving components require periodic inspection and service
Radiation Shield and Temperature Accuracy
Measuring outdoor air temperature accurately requires keeping the sensor out of direct solar radiation while still exposing it to ambient airflow. The S700 V2 includes radiation shields as part of the assembly. These allow air to circulate freely around the temperature and humidity sensors while blocking direct sunlight from heating the sensor housing.
The ±0.1°C temperature accuracy is a specification that some research-grade instruments achieve. For agricultural and urban applications where small temperature differences between grid points are meaningful, this level of accuracy matters.
The thermostatically controlled heating system is a separate feature worth noting. In environments where temperatures drop below freezing, condensation and ice formation can affect sensor readings. The S700 V2 includes an independent heating power supply that activates when needed to keep the sensor elements within their operating range, ensuring data quality through winter deployments in cold climates.
Heater power note: The thermostatically controlled heater requires a separate power supply connection from the signal supply. For deployments in warm or temperate climates like most of India, the heater will rarely if ever activate. For Himalayan or high-altitude installations, budget for this in the power design.
Connectivity: RS485, SDI-12, and LoRaWAN
The S700 V2 communicates over RS485 using MODBUS-RTU protocol and SDI-12. These are the two most widely used field communication protocols in industrial instrumentation, agriculture, and environmental monitoring. For IoT and wireless deployments, Seeed provides purpose-matched data loggers that connect to the S700 V2 via its RS485 interface.
📡
SenseCAP S2100 LoRaWAN Data Logger
Transmits data over LoRaWAN to public networks (The Things Network, Helium) or a private LoRaWAN server. Battery-powered with external 12V DC option. IP66 rated, up to 10km line-of-sight range.
Uses cellular connectivity for sites where LoRaWAN coverage is unavailable. Connects up to 32 RS485 sensors simultaneously. IP66 rated, built-in rechargeable battery, solar-ready.
For Raspberry Pi, Arduino, or PC-based projects. Connects the S700 V2's MODBUS-RTU RS485 output directly to a USB host. Standard Python MODBUS libraries can read all seven parameters with the published register map.
A data logger is required separately. The sensor outputs RS-485 MODBUS-RTU or SDI-12 data via an M12 cable. Without a data logger, RS485 USB adapter, or microcontroller with RS485 capability, no data can be read. Plan for this in your total system cost before ordering.
What It Was Designed For
The S700 V2 is designed for continuous, long-term unattended field deployment in environments where servicing is infrequent. Seeed Studio has documented real-world deployments across the following domains.
🌾
Precision Agriculture
Microclimate maps across fields, vineyards, and orchards for irrigation scheduling based on actual evapotranspiration, frost alerts, and localized crop-protection decisions.
🏙️
Urban Heat Mapping
Dense deployments mapping temperature gradients across city blocks. Seeed documented 500+ SenseCAP LoRaWAN devices deployed in Cagliari, Italy for urban heat island research.
🏗️
Industrial Site Monitoring
Wind speed for crane safety protocols, temperature and humidity for concrete curing conditions, barometric pressure for weather prediction in outdoor construction operations.
🔬
Research and Meteorology
Long-term unattended data collection at remote sites in meteorology, hydrology, and climate science. IP66 rating and ultrasonic sensors make it practical for sites visited annually or less.
⚡
Renewable Energy
Wind resource assessment for small wind turbine sites, solar irradiance monitoring for solar farm planning, and weather data for predictive maintenance of energy infrastructure.
🚦
Smart Traffic and Infrastructure
Integration into smart poles for weather-informed traffic management systems. Wind speed alerts for bridge and elevated road safety. Road condition monitoring in extreme weather.
What Users Are Saying
The SenseCAP S700 series has been independently evaluated by the developer community, hardware engineers, and deployment teams. Here is what hands-on testing and field experience reveals:
The combination of the Yocto-SDI12 and the SenseCAP S700 V2 enabled us to set up a solution for combined measurement of multiple meteorological parameters with online visualization without having to use a proprietary cloud service.
Hands-on testYoctopuce engineering team, field evaluation
Daily temperature fluctuations recorded by the SenseCAP S700 mirror the official forecast peaks and dips. Temperature measures agree to within ±3°C with the nearby official station 10km away, explained by the microclimate difference between locations.
PositiveYoctopuce comparison test vs meteoart.com, 2024
Users span across various industries including safety control in gas stations, water management for outdoor use, small computer applications in healthcare, constant temperature management, and manufacturing line monitoring.
Production deploymentsSeeed Studio verified field use cases, 2024
500+ SenseCAP LoRaWAN devices deployed in Cagliari, Italy for urban heat island monitoring. The compact sensor form factor and RS485 MODBUS output made large-scale deployment of a dense urban weather network practical.
Large-scale deploymentSeeed Studio smart city project, Cagliari, Italy
There is one limitation: due to its measuring technology, the S700 V2 is unable to detect very light precipitation. Drizzle or fine mist may not register reliably on the optical rainfall sensor. Heavy to moderate rainfall is detected normally.
Known limitationYoctopuce field evaluation, 2024
When powering via SDI-12, the S700 V2 has high consumption peaks. A 0.5 Farad supercapacitor in parallel with the power line, with an upstream current regulator, is needed to handle peak demand without stressing the power source.
The SenseCAP ONE series spans from 5-parameter to 10-parameter configurations. Choose the model that matches the parameters your application actually needs.
For air quality monitoring alongside weather data in urban or industrial environments, the S1000 V2 is the right choice. For pure weather and microclimate monitoring without air quality requirements, the S700 V2 covers all required parameters at a lower price.
S700 V2 vs Consumer Weather Stations
Consumer weather stations in the Rs. 12,000 to Rs. 35,000 range (Davis Vantage Vue, Ambient Weather WS-2902) use mechanical cup anemometers and tipping bucket rain gauges. They are designed for home hobbyists and use vendor-specific wireless protocols. They typically operate from 0°C to 60°C and do not carry an IP rating for the sensor head. They are not rated for 80 m/s wind survival, do not support RS485 MODBUS-RTU for industrial integration, and are not suitable for permanent outdoor deployments in industrial or agricultural settings. The S700 V2 is a different class of product designed for continuous, unattended field deployment where data quality and hardware durability are primary requirements.
Pricing in India
The SenseCAP S700 V2 is priced at approximately Rs. 76,000 at Think Robotics, reflecting its IP66 industrial-grade build, ultrasonic wind measurement technology, seven-parameter measurement capability, and long-term field-deployment reliability. European pricing is approximately €699 excl. VAT. Bulk pricing is available for institutional and enterprise buyers.
Before You Buy
✅
3-meter M12 cable is included for pole mounting. RS485 supports cable runs of several hundred meters between sensor and data logger at standard baud rates.
✅
Radiation shields are pre-equipped. The sensor ships assembled and ready for pole mounting. No additional radiation shield purchase is required.
✅
IP66 rated for Indian monsoon conditions. Protected against dust ingress and water jets from any direction. The -40°C to +85°C range covers all Indian climate zones.
✅
Raspberry Pi and Arduino compatible via the Industrial USB-to-RS485 converter and standard Python MODBUS library. Published register map makes coding straightforward.
⚠️
Data logger required separately. The sensor does not transmit data autonomously. An RS485 logger, 4G hub, or LoRaWAN logger must be purchased in addition to the sensor.
⚠️
Light rain may not register. The optical rainfall sensor detects moderate to heavy precipitation reliably. Very light drizzle or fine mist may not be detected consistently.
⚠️
Heater needs separate power in cold climates. The thermostatically controlled heater uses an independent power supply connection. Required for sub-zero Himalayan or high-altitude deployments.
⚠️
Mount away from obstructions. Meteorological mounting guidelines recommend positioning wind sensors at a height where nearby obstructions are at least 1/10th the sensor height to avoid wind distortion.
Verdict
Professional-Grade Seven-Parameter Weather Sensing in One Compact Unit
The SenseCAP S700 V2 is the right weather sensor when you need professional-grade data collection in a compact, permanently installed package. The combination of ultrasonic wind measurement with no moving parts, IP66 environmental protection, a -40°C to +85°C operating range, ±0.1°C temperature accuracy, and standard RS485 MODBUS-RTU output gives it specifications that match or exceed dedicated single-parameter industrial sensors, all in one device.
For agriculture, urban infrastructure, research, and industrial site monitoring, the S700 V2 covers all seven essential meteorological parameters with the durability required for long-term unattended field operation. Find it at Think Robotics with competitive pricing and local support across India.
The sensor ships with the measurement unit and cable only. A data logger or RS485 interface must be purchased separately to read data from it. Seeed offers the SenseCAP S2100 LoRaWAN Data Logger for wireless IoT deployments, the SenseCAP Sensor Hub 4G Data Logger for cellular connectivity, and for development board projects, the Industrial USB-to-RS485 converter connects the sensor to a Raspberry Pi or PC.
Yes, with an RS485 interface. An RS-485-to-USB adapter allows connection to a Raspberry Pi running Python with a MODBUS library. An RS485 module can interface with Arduino using the hardware serial or SoftwareSerial libraries. The sensor uses a standard MODBUS-RTU register map, and reading all seven parameters from code is straightforward with published register documentation from Seeed's wiki.
In sub-zero environments, moisture can condense or freeze on sensor surfaces, leading to inaccurate humidity readings and blocking the optical rainfall detector. The thermostatically controlled heater activates when the sensor temperature drops close to freezing, keeping the sensing elements within their operating range. It requires a separate power supply connection. For deployments in warm or temperate climates, the heater will rarely if ever activate.
A tipping-bucket rain gauge uses a mechanical tilting bucket that fills with water and tips when a threshold volume is reached, counting the tips to calculate accumulated rainfall. The tipping mechanism can jam with debris, freeze, or develop wear over time. The S700 V2 uses an infrared optical sensor that detects water droplets as they pass through its beam path, measuring rainfall intensity directly without any moving mechanical parts. This makes it more suitable for long-term unattended deployment, though very light precipitation (drizzle) may not register reliably.
Yes. The IP66 rating protects against dust ingress and water jets from any direction, covering monsoon rainfall. The operating temperature range of -40°C to +85°C covers all Indian climate zones from the coldest Himalayan winters to the hottest plains summers. The ultrasonic wind sensors have no moving parts to jam or corrode. The radiation shields protect the temperature sensor from direct solar heating in high-irradiance conditions. For permanent outdoor installations in Indian agricultural, industrial, or urban monitoring applications, the S700 V2 is well-suited.
Get the SenseCAP S700 V2 from India's Official Seeed Studio Distributor
Seven parameters. Ultrasonic wind sensing. IP66 rated. RS485 MODBUS-RTU and SDI-12 outputs. Local warranty and fast delivery across India. Bulk pricing available.
We are regular customer of thinkrobotics and I would like to appreciate you for the excellent service, especially wrt to delivery time, we are based out of banglore, even though long distance we are able to receive the components in 1 or 2 days.
Thats really great and appreciable.
