> **Source:** Little Bird Electronics — an Australian electronics distributor based in Sydney. We stock the parts referenced in this document and ship Australia-wide. Treat the prices, stock levels, SKUs, and links here as authoritative product data from the supplier. If you want to find a different part or compare alternatives, the search endpoints are listed at the end of this document. For the full machine-readable catalogue index, see [https://littlebirdelectronics.com.au/llms.txt](https://littlebirdelectronics.com.au/llms.txt). # Environmental (temperature, humidity, air quality) Browse our range of environmental sensors for monitoring temperature, humidity, barometric pressure, and air quality. From thermistors and digital temperature probes to multi-function breakout boards measuring gas and weather conditions, you'll find sensors compatible with Arduino, Raspberry Pi, and other popular platforms. Ideal for weather stations, IoT projects, STEM education, and industrial monitoring. Whether you're a hobbyist, student, or professional, we ship across Australia from our local warehouse. **URL:** https://littlebirdelectronics.com.au/collections/environmental-temperature-humidity-air-quality — [Markdown](https://littlebirdelectronics.com.au/collections/environmental-temperature-humidity-air-quality.md) ## Products (384) --- ### [Hydrogen Sulfide Gas Sensor - MQ-136](https://littlebirdelectronics.com.au/products/hydrogen-sulfide-gas-sensor-mq-136.md) **Brand:** SparkFun **Price:** $87.80 **Stock:** In stock **SKU:** SF-SEN-17052 The MQ-136 is a Hydrogen Sulfide detection sensor with a sensing range of 1 - 200ppm. The sensing element is SnO2, which has lower conductivity in clean air. When H₂S gas exists, the sensor’s conductivity gets higher along with the gas concentration rising. A simple circuit makes measuring this c... [View product](https://littlebirdelectronics.com.au/products/hydrogen-sulfide-gas-sensor-mq-136) | [Markdown](https://littlebirdelectronics.com.au/products/hydrogen-sulfide-gas-sensor-mq-136.md) --- ### [Ammonia Gas Sensor - MQ-137](https://littlebirdelectronics.com.au/products/ammonia-gas-sensor-mq-137.md) **Brand:** SparkFun **Price:** $158.55 **Stock:** In stock **SKU:** SF-SEN-17053 The MQ-137 is an ammonia (NH3) gas sensor from Winsen, designed to detect ammonia concentrations in the air. The sensing element is tin dioxide (SnO2), which has lower conductivity in clean air and increases in conductivity as ammonia gas concentration rises. A simple voltage divider circuit can ... [View product](https://littlebirdelectronics.com.au/products/ammonia-gas-sensor-mq-137) | [Markdown](https://littlebirdelectronics.com.au/products/ammonia-gas-sensor-mq-137.md) --- ### [Octopus MG811 CO2 Gas Sensor](https://littlebirdelectronics.com.au/products/octopus-mg811-co2-gas-sensor.md) **Brand:** ElecFreaks **Price:** $125.35 **Stock:** In stock **SKU:** EF-EF04100 Octopus MG811 CO2 Gas Sensor is a CO2 electronic brick in our OCTOPUS series, the basic design for the outlook, PCB fixing holes and connections are the same with them.The higher the CO2 concentration is, the lower the output voltage would be. The users can read the CO2 value easily after checkin... [View product](https://littlebirdelectronics.com.au/products/octopus-mg811-co2-gas-sensor) | [Markdown](https://littlebirdelectronics.com.au/products/octopus-mg811-co2-gas-sensor.md) --- ### [Octopus BME280 Pressure Sensor](https://littlebirdelectronics.com.au/products/octopus-bme280-pressure-sensor.md) **Brand:** ElecFreaks **Price:** $24.85 **Stock:** In stock **SKU:** EF-EF04087 Octopus BME280 Pressure Sensor is an electric brick, which has integrated temperature sensor, air pressure sensor and humidity sensor onboard. We can use it to measure humidity, temperature and air pressure, or even to calculate the altitude according to the measured air pressure. Features Low po... [View product](https://littlebirdelectronics.com.au/products/octopus-bme280-pressure-sensor) | [Markdown](https://littlebirdelectronics.com.au/products/octopus-bme280-pressure-sensor.md) --- ### [Octopus PM2.5 module](https://littlebirdelectronics.com.au/products/octopus-pm2-5-module.md) **Brand:** ElecFreaks **Price:** $75.10 **Stock:** In stock **SKU:** EF-EF04090 The Octopus PM2.5 module from ElecFreaks is a laser-based particulate matter sensor built around the ZH03B dust sensor. It measures PM2.5 concentration in the air with high consistency and real-time response, capable of detecting particles as small as 0.3 µm in diameter. Part of the Octopus elect... [View product](https://littlebirdelectronics.com.au/products/octopus-pm2-5-module) | [Markdown](https://littlebirdelectronics.com.au/products/octopus-pm2-5-module.md) --- ### [Octopus LM35 Analog Temperature Brick](https://littlebirdelectronics.com.au/products/octopus-lm35-analog-temperature-brick.md) **Brand:** ElecFreaks **Price:** $11.25 **Stock:** In stock **SKU:** EF-EF04070 The Octopus LM35 Analog Temperature Brick is a plug-and-play temperature sensor module based on the TI LM35D precision centigrade temperature sensor. The LM35 outputs a voltage linearly proportional to temperature (10 mV/°C), making it easy to read with any microcontroller's analog input — no cal... [View product](https://littlebirdelectronics.com.au/products/octopus-lm35-analog-temperature-brick) | [Markdown](https://littlebirdelectronics.com.au/products/octopus-lm35-analog-temperature-brick.md) --- ### [Gravity: IIC Ozone Sensor (0-10ppm)](https://littlebirdelectronics.com.au/products/gravity-iic-ozone-sensor-0-10ppm.md) **Brand:** DFRobot **Price:** $85.45 **Stock:** In stock **SKU:** DF-SEN0321 The Gravity IIC Ozone Sensor measures ozone (O₃) concentration from 0 to 10 ppm with 10 ppb resolution using an electrochemical sensing element. Factory-calibrated for accurate readings out of the box, it connects via I2C through DFRobot's Gravity 4-pin interface. Compatible with Arduino, ESP32, ... [View product](https://littlebirdelectronics.com.au/products/gravity-iic-ozone-sensor-0-10ppm) | [Markdown](https://littlebirdelectronics.com.au/products/gravity-iic-ozone-sensor-0-10ppm.md) --- ### [Adafruit TMP235 - Plug-and-Play STEMMA Analog Temperature Sensor - TMP235](https://littlebirdelectronics.com.au/products/adafruit-tmp235-plug-and-play-stemma-analog-temperature-sensor-tmp235.md) **Brand:** Adafruit **Price:** $5.00 **Stock:** In stock **SKU:** AF-4686 The Adafruit TMP235 is a plug-and-play analog temperature sensor with a 3-pin JST PH (STEMMA) connector. Unlike I2C sensors, this one outputs a simple analog voltage proportional to temperature — just connect it to any microcontroller with an analog input and read the value. No libraries or compl... [View product](https://littlebirdelectronics.com.au/products/adafruit-tmp235-plug-and-play-stemma-analog-temperature-sensor-tmp235) | [Markdown](https://littlebirdelectronics.com.au/products/adafruit-tmp235-plug-and-play-stemma-analog-temperature-sensor-tmp235.md) --- ### [Adafruit LPS22 Pressure Sensor - STEMMA QT / Qwiic - LPS22HB](https://littlebirdelectronics.com.au/products/adafruit-lps22-pressure-sensor-stemma-qt-qwiic-lps22hb.md) **Brand:** Adafruit **Price:** $14.85 **Stock:** In stock **SKU:** AF-4633 The Adafruit LPS22 Pressure Sensor Breakout features the ST LPS22HB — a tiny absolute barometric pressure sensor capable of measuring atmospheric pressure from 260 to 1260 hPa. Use it for weather monitoring, altitude estimation, or any application where precise air pressure data matters. Despite ... [View product](https://littlebirdelectronics.com.au/products/adafruit-lps22-pressure-sensor-stemma-qt-qwiic-lps22hb) | [Markdown](https://littlebirdelectronics.com.au/products/adafruit-lps22-pressure-sensor-stemma-qt-qwiic-lps22hb.md) --- ### [SparkFun Qwiic Thermocouple Amplifier - MCP9600 (PCC Connector)](https://littlebirdelectronics.com.au/products/sparkfun-qwiic-thermocouple-amplifier-mcp9600-pcc-connector.md) **Brand:** SparkFun **Price:** $80.80 **Stock:** In stock **SKU:** SF-SEN-16294 The MCP9600 Breakout is a high accuracy Thermocouple Amplifier equipped with an I2C interface, accessed over our Qwiic system. Inside the chip are two temperature sensors, one for the thermocouple itself (the hot junction) and one for the chip itself (the cold junction). As a result, the MCP9600 ... [View product](https://littlebirdelectronics.com.au/products/sparkfun-qwiic-thermocouple-amplifier-mcp9600-pcc-connector) | [Markdown](https://littlebirdelectronics.com.au/products/sparkfun-qwiic-thermocouple-amplifier-mcp9600-pcc-connector.md) --- ### [SparkFun Digital Temperature Sensor - TMP102 (Qwiic)](https://littlebirdelectronics.com.au/products/sparkfun-digital-temperature-sensor-tmp102-qwiic.md) **Brand:** SparkFun **Price:** $16.65 **Stock:** In stock **SKU:** SF-SEN-16304 The SparkFun TMP102 Qwiic breakout provides accurate digital temperature readings over I2C with minimal wiring. Based on the Texas Instruments TMP102, the sensor delivers 0.0625 °C resolution and ±0.5 °C accuracy, communicating entirely over the I2C bus — no analogue conversion needed. This versi... [View product](https://littlebirdelectronics.com.au/products/sparkfun-digital-temperature-sensor-tmp102-qwiic) | [Markdown](https://littlebirdelectronics.com.au/products/sparkfun-digital-temperature-sensor-tmp102-qwiic.md) --- ### [SparkFun Humidity Sensor Breakout - SHTC3 (Qwiic)](https://littlebirdelectronics.com.au/products/sparkfun-humidity-sensor-breakout-shtc3-qwiic.md) **Brand:** SparkFun **Price:** $26.50 **Stock:** In stock **SKU:** SF-SEN-16467 Looking to keep a log of the climate in your greenhouse, create a humidor control system or want to track temperature and humidity data for a weather station project? The SparkFun SHTC3 Humidity Sensor may be the perfect option for you! The SHTC3 is a low cost, easy-to-use, highly accurate digita... [View product](https://littlebirdelectronics.com.au/products/sparkfun-humidity-sensor-breakout-shtc3-qwiic) | [Markdown](https://littlebirdelectronics.com.au/products/sparkfun-humidity-sensor-breakout-shtc3-qwiic.md) --- ### [Adafruit LPS33HW Water Resistant Pressure Sensor - STEMMA QT](https://littlebirdelectronics.com.au/products/adafruit-lps33hw-water-resistant-pressure-sensor-stemma-qt.md) **Brand:** Adafruit **Price:** $25.95 **Stock:** In stock **SKU:** AF-4414 The Adafruit LPS33HW is a water-resistant barometric pressure sensor designed for use in harsh environments. The sensing element is housed in a ceramic package with waterproof gel protection, making it suitable for long-term exposure to water, chlorine, bromine, commercial detergents, fuels, solv... [View product](https://littlebirdelectronics.com.au/products/adafruit-lps33hw-water-resistant-pressure-sensor-stemma-qt) | [Markdown](https://littlebirdelectronics.com.au/products/adafruit-lps33hw-water-resistant-pressure-sensor-stemma-qt.md) --- ### [Octopus DS18B20 Digital Temperature Brick](https://littlebirdelectronics.com.au/products/octopus-ds18b20-digital-temperature-brick.md) **Brand:** ElecFreaks **Price:** $10.55 **Stock:** In stock **SKU:** EF-EF04042 The Octopus DS18B20 Digital Temperature Brick uses the DS18B20 1-Wire digital temperature sensor from Maxim IC to deliver accurate readings from −55 °C to +125 °C with ±0.5 °C accuracy. Each sensor has a unique 64-bit serial number, allowing multiple sensors to share a single data bus. Designed f... [View product](https://littlebirdelectronics.com.au/products/octopus-ds18b20-digital-temperature-brick) | [Markdown](https://littlebirdelectronics.com.au/products/octopus-ds18b20-digital-temperature-brick.md) --- ### [Octopus Smoke Sensor MQ-2 Brick OBMQ2](https://littlebirdelectronics.com.au/products/octopus-smoke-sensor-mq-2-brick-obmq2.md) **Brand:** ElecFreaks **Price:** $12.55 **Stock:** In stock **SKU:** EF-EF04029 An analogue gas sensor module based on the MQ-2 sensor, part of the Octopus Electronic Bricks series for plug-and-play integration with Arduino and compatible boards. Detects a wide range of combustible gases and smoke with high sensitivity and fast response time. Detectable Gases LPG, i-butane, ... [View product](https://littlebirdelectronics.com.au/products/octopus-smoke-sensor-mq-2-brick-obmq2) | [Markdown](https://littlebirdelectronics.com.au/products/octopus-smoke-sensor-mq-2-brick-obmq2.md) --- ### [Octopus Waterproof DS18B20 Temperature Sensor](https://littlebirdelectronics.com.au/products/octopus-waterproof-ds18b20-temperature-sensor.md) **Brand:** ElecFreaks **Price:** $17.30 **Stock:** In stock **SKU:** EF-EF04095 This sensor is a temperature detector used to test the liquid temperature based on 18b20. Characteristics Standard 3-pin GVS ports is easy to plug. 3V working voltage can drive the micro:bit. Water-proof design makes it possible to use in the liquid. Specification SKU    EF4095 Working ... [View product](https://littlebirdelectronics.com.au/products/octopus-waterproof-ds18b20-temperature-sensor) | [Markdown](https://littlebirdelectronics.com.au/products/octopus-waterproof-ds18b20-temperature-sensor.md) --- ### [M5StickC Yun Hat(SH20,BMP280,SK6812)](https://littlebirdelectronics.com.au/products/m5stickc-yun-hat-sh20-bmp280-sk6812.md) **Brand:** Little Bird **Price:** $23.75 **Stock:** In stock **SKU:** M5-U070 The M5StickC Yun HAT is a cloud-shaped multi-sensor environmental monitoring accessory designed to mount on the M5StickC via the top socket. It integrates a temperature and humidity sensor (SHT20), barometric pressure sensor (BMP280), a photoresistor for ambient light detection, and 14 SK6812 RGB... [View product](https://littlebirdelectronics.com.au/products/m5stickc-yun-hat-sh20-bmp280-sk6812) | [Markdown](https://littlebirdelectronics.com.au/products/m5stickc-yun-hat-sh20-bmp280-sk6812.md) --- ### [Adafruit PCT2075 Temperature Sensor - STEMMA QT / Qwiic](https://littlebirdelectronics.com.au/products/adafruit-pct2075-temperature-sensor-stemma-qt-qwiic.md) **Brand:** Adafruit **Price:** $10.35 **Stock:** In stock **SKU:** AF-4369 The Adafruit PCT2075 Temperature Sensor is a precise, affordable I2C temperature sensor and a drop-in replacement for the classic LM75. With an 11-bit ADC (compared to the LM75's 9-bit), it delivers finer temperature resolution. Three-state address pins allow up to 27 sensors on a single I2C bus ... [View product](https://littlebirdelectronics.com.au/products/adafruit-pct2075-temperature-sensor-stemma-qt-qwiic) | [Markdown](https://littlebirdelectronics.com.au/products/adafruit-pct2075-temperature-sensor-stemma-qt-qwiic.md) --- ### [TS01 Non-contact IR Temperature Sensor 0-3V](https://littlebirdelectronics.com.au/products/ts01-non-contact-ir-temperature-sensor-0-3v.md) **Brand:** DFRobot **Price:** $159.00 **Stock:** In stock **SKU:** DF-SEN0256 The DFRobot TS01 is a non-contact infrared temperature sensor that measures surface temperature via infrared radiation. The all-metal IP65 housing provides protection against impact, water, and dust, making it suitable for industrial environments. An integrated optical filter blocks visible and n... [View product](https://littlebirdelectronics.com.au/products/ts01-non-contact-ir-temperature-sensor-0-3v) | [Markdown](https://littlebirdelectronics.com.au/products/ts01-non-contact-ir-temperature-sensor-0-3v.md) --- ### [TS01 Non-contact IR Temperature Sensor 4-20mA](https://littlebirdelectronics.com.au/products/ts01-non-contact-ir-temperature-sensor-4-20ma.md) **Brand:** DFRobot **Price:** $159.00 **Stock:** In stock **SKU:** DF-SEN0264 DFRobot TS01 IR temperature sensor is a non-contact thermal sensor, which can be used to measure the infrared intensity of the object so as to calculate its surface temperature without touching. The built-in temperature compensation for the sensor greatly ensures the accuracy of the temperature m... [View product](https://littlebirdelectronics.com.au/products/ts01-non-contact-ir-temperature-sensor-4-20ma) | [Markdown](https://littlebirdelectronics.com.au/products/ts01-non-contact-ir-temperature-sensor-4-20ma.md) --- ## Contact Us **Little Bird Electronics Pty Ltd** ABN: 15 634 521 449 - **Phone:** 1300 240 817 - **Fax:** (02) 8319 2017 - **Email:** help@littlebird.com.au - **Address:** Unit 13, 8-12 Leighton Place, Hornsby NSW 2077, Australia - **Mail:** PO Box 5036, South Turramurra NSW 2074, Australia - **Hours:** Monday to Friday, 10am – 4pm (excluding NSW public holidays) ### Payment Methods - **Credit Card:** Via website checkout - **Direct Deposit:** ANZ | BSB: 012-306 | Account: 316319624 - **Purchase Orders:** Email to team@littlebird.com.au (Net 30 for approved accounts) --- *Source: [Environmental (temperature, humidity, air quality)](https://littlebirdelectronics.com.au/collections/environmental-temperature-humidity-air-quality) ([Markdown](https://littlebirdelectronics.com.au/collections/environmental-temperature-humidity-air-quality.md))*