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- SKU: 08862
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7Semi SGP41 + SHT45 Temp, Humidity, VOC, NOx Sensor Probe
The 7Semi SGP41 + SHT45 Environmental Sensor Probe combines Sensirion's SGP41 gas sensor with the high-accuracy SHT45 temperature and humidity sensor for indoor air-quality and environmental monitoring. The SGP41 provides separate sensing channels responsive to Volatile Organic Compounds (VOCs) and oxidising gases associated with NOx events, while the SHT45 supplies accurate temperature and relative-humidity measurements for environmental monitoring and gas-signal compensation.
The remote stainless-steel probe design allows the sensing elements to be positioned away from heat-generating controllers, displays, power electronics, and other components that could influence local temperature or humidity. Both sensors communicate digitally through I2C, with the SHT45 operating at address 0x44 and the SGP41 at 0x59. Sensirion's Gas Index Algorithm can process the SGP41 raw signals into independent VOC Index and NOx Index values from 1 to 500, making the probe suitable for air purifiers, HVAC systems, smart buildings, indoor air-quality monitors, and IoT environmental nodes.
Features
- 4-in-1 Environmental Monitoring: Combines VOC, NOx, temperature, and relative-humidity sensing
- Dual-Sensor Design: Integrates Sensirion SGP41 and SHT45 sensors
- VOC Monitoring: Detects changes in indoor VOC conditions using the SGP41 VOC sensing element
- NOx Monitoring: Provides a separate raw signal responsive to oxidising gases associated with NOx events
- Gas Index Support: Compatible with Sensirion's VOC and NOx Gas Index Algorithm
- VOC Index Range: 1–500
- NOx Index Range: 1–500
- High-Accuracy Temperature: SHT45 typical accuracy of +-0.1°C
- High-Accuracy Humidity: SHT45 typical accuracy of +-1.0% RH
- Humidity Range: 0–100% RH
- Temperature Range: -40°C to +125°C
- Temperature/Humidity Compensation: SHT45 measurements can be supplied to the SGP41 for compensated gas sensing
- Digital Interface: I2C communication for both sensors
- Separate I2C Addresses: SHT45 at 0x44 and SGP41 at 0x59
- Remote Probe Design: Helps separate the sensors from heat-generating electronics
- Stainless-Steel Construction: Suitable for protected remote environmental sensing
- Microcontroller Integration: Suitable for Arduino, ESP32, STM32, Raspberry Pi, RP2040, and other I2C hosts
Specifications
- Category of Product: Digital Environmental Sensor
- Communication Interface: I2C ( SHT45 -: 0x44 , SGP41 -: 0x59)
- Temperature Measurement Range: -40C To +80C
- Temperature Accuracy: +/-0.1C
- Humidity Measurement Range: 0%RH-100%RH
- Humidity Accuracy: Up to ±1.0% RH
- Target Gases: VOCs & NOx
- Operational Voltage: 1.7 - 3.6V DC (Typically 3.3V)
- Cable Length: 1meter
- Probe Dimension: 50mmx6mm
Applications
- Indoor air-quality monitoring
- HVAC control systems
- Air purifiers
- Smart ventilation
- Smart home environmental monitoring
- Building automation
- VOC event detection
- NOx event monitoring
- Kitchen and cooking-air monitoring
- IoT environmental nodes
- Laboratory environmental logging
- Portable air-quality equipment
- Demand-controlled ventilation
- Industrial environmental monitoring
Package Includes
- 1x 7Semi SGP41 + SHT45 Temp, Humidity, VOC, NOx Sensor Probe
Warranty Terms :
Branded products (Waveshare/ Raspberry Pi/ Radxa/ DWIN etc) are as per brand warranty terms. Generic products are eligible for replacement within 7 days of delivery based on following conditions.
Products are eligible for a replacement if there is physical damage during transit or a clear manufacturing defect. Any claim for damage/ wrong items/ replacement must be made within 48 hours of successful delivery of the product. Requests for refund of amount or exchange of product(s) will be reviewed on a case by case basis and HUBTRONICS carries final rights to take a final decision on refund, store credit or exchange.
What to take care of ?
Most of our products are technical in nature and require trained personnel to handle them. Any kind of mishandling can result in damage or malfunctioning of the product, it is not possible for us to provide a replacement or refund if the product is damaged due to technical or physical mishandling.
Who pays the return shipping cost?
Free of cost return pickup from delivery address is eligible for products categorized as manufacturing defect/ Damage in transit/ Wrong items delivered. We do not support return pickup for any B2B order or offline orders not placed on website. Buyer need to arrange return shipping for B2B orders.
What voids warranty?
Please note that replacement/ return or refund is not possible if the product is not compatible with your system/application. Please check all the technical details/ dimensions etc. before ordering and contact us for any kind of clarifications.
If product is soldered/ programmed at any point or physically altered in any way, it is not eligible for return/ replacement. If the item requires soldering for testing, please ensure that you use suitable clips or jig to test it without soldering. Any kind of soldering job makes the product ineligible for return or replacement.
Following items are not eligible for return under any circumstances
- Device Programmers / Dongles
- Soldering Consumables (Wire, Flux etc)
