MQ-4 Gas Sensor/Natural Gas & Methane Sensor

We’re committed to providing a seamless shopping experience, from order placement to delivery and beyond. Enjoy fast, secure shipping with tracking on all orders, so you know exactly when to expect your items. If something isn’t quite right, don’t worry—our easy return process allows you to return or exchange products within 30 days of receiving them. We prioritize your satisfaction and aim to make every step, from shipping to returns, as smooth and stress-free as possible.

For more details, please review our Shipping Policy.

✓ Adult Supervision: Younger Gadgeteers should build and test with a parent, teacher or older sibling nearby, especially for wiring and power steps.

✓ Batteries: Use only the recommended battery type, insert with correct polarity, and remove batteries during long storage periods.

✓ Keep It Dry: Keep electronic components and boards away from liquids and damp environments.

✓ Handle Components Gently: Avoid bending pins or forcing connectors — a gentle fit is the right fit.

✓ Store Safely: Keep small parts away from very young children, and store the kit in its box between builds.