> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt # Gravity: PAV3015 Air Velocity Sensor (0-15 m/s, I2C) **Type:** Product page · **SKU:** SEN0639 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia) **Page:** https://core-electronics.com.au/dfrobot-gravity-pav3015-air-velocity-sensor-i2c-anemometer-wind-speed-arduino-esp32-raspberry-pi.html ([markdown](https://core-electronics.com.au/dfrobot-gravity-pav3015-air-velocity-sensor-i2c-anemometer-wind-speed-arduino-esp32-raspberry-pi.html.md)) Get accurate (±5%) air velocity data with the Gravity: PAV3015 Sensor. This compact, fast-response (125ms) anemometer uses I2C for Arduino, ESP32, or RPi.... ## Pricing - **Price:** $88.90 (inc GST) — $80.82 AUD, exc GST ## Availability & dispatch - Available with a lead time — expect dispatch between Sep 21 and Sep 25. ## How to buy - **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=SEN0639:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart. - **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/SEN0639:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.) - **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there. - **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works) - **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt ## Description The Gravity: PAV3015 Air Velocity Sensor is a compact, high-performance anemometer for precise airflow measurement. It integrates the Posifa PAV3015D sensor, which operates on the thermopile principle by measuring temperature differences to calculate air velocity. This solid-state method provides significant advantages over traditional cup anemometers. The PAV3015 anemometer delivers a wide measurement range of 0 to 15 m/s with ±5% F.S accuracy and an exceptionally fast 125 ms response time. Coupled with a low 10 mA power consumption and a 3.3V–5V Gravity I2C interface, this air velocity sensor is ideal for embedded systems in applications like server cooling, HVAC monitoring, and UAV airspeed detection. **Compact Form Factor for Integrated Systems** The PAV3015's thermal-based design eliminates the bulk associated with traditional cup-and-vane anemometers. Its minimal footprint is a critical advantage, enabling seamless integration into compact devices, embedded systems, and portable equipment where space is a primary constraint. This allows for airflow measurement capabilities in applications previously limited by sensor size. ![Dimension of Gravity: PAV3015 Air Velocity Sensor](https://dfimg.dfrobot.com/enshop/image/data/SEN0639/size_0x0.jpg.webp) Figure: Dimension of Gravity: PAV3015 Air Velocity Sensor **High-Accuracy Measurement with Rapid Response** The PAV3015 delivers reliable and precise air velocity readings across its full 0–15 m/s range. With an accuracy of ±5% F.S, this wind speed sensor provides trustworthy data for critical monitoring. Furthermore, its 125 ms typical response time ensures immediate detection of airflow changes, making it highly effective for real-time feedback loops, system alarms, or dynamic control systems. **Simplified Integration with Gravity I2C** Equipped with the standard DFRobot Gravity I2C interface, this I2C anemometer ensures a simple, plug-and-play connection. It supports a wide 3.3V to 5V power supply, guaranteeing out-of-the-box compatibility with mainstream microcontrollers such as Arduino, ESP32, and Raspberry Pi. This standardized interface accelerates prototyping and simplifies final project assembly. **Optimized for Low-Power Applications** Engineered for energy efficiency, the anemometer operates on a minimal 10 mA of current. This low-power profile makes it an excellent choice for battery-powered systems, remote monitoring stations, or portable measurement devices, such as handheld anemometers or sports equipment, where power conservation is a critical design requirement. ### Specification - Supply Voltage: 3.3–5V - Operating Temperature: -25 to +85 degrees - Operating Humidity: 0–100% R.H. (non-condensing) - Operating Current: 10 mA - Response Time: 125 ms - Measurement Range: 0–15 m/s - Accuracy: ±5% F.S ### Documents [Product wiki](https://wiki.dfrobot.com/_SKU_SEN0639_Gravity_PAV3015_Air_Velocity_Sensor)[Schematic](https://img.dfrobot.com.cn/wikicn/62b2fb5caa613609f271523c/8a46fcf383e6fcb959f63093194c3b84.pdf)[Layout](https://img.dfrobot.com.cn/wikicn/62b2fb5caa613609f271523c/a3a28145c5691770e7e90538b84682bf.pdf)[Dimension](https://img.dfrobot.com.cn/wikicn/62b2fb5caa613609f271523c/59c496c71ec428950de1434550aecd71.pdf)[PAV30xx datasheet](https://img.dfrobot.com.cn/wikicn/62b2fb5caa613609f271523c/7fb13423df4d5532ff1c79a51bd9daa9.pdf)[I2C protocol](https://img.dfrobot.com.cn/wikicn/62b2fb5caa613609f271523c/3867e2c212d65f64c65b78c3388cecdd.pdf) ## Images - [Product image 1](https://core-electronics.com.au/media/catalog/product/S/E/SEN0639-1.jpg)