Posts tagged with magnetic door sensors

Magnetic door sensors

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Filed under Electronics

Introducing Magnetic door sensors

Magnetic door sensors can establish if a door is open or closed and are commonly used in alarm systems to trigger the opening and closing of doors and windows.

Good colour matches for red

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Filed under Graphic Design

Good colour matches for red

The colour red can represent either love and passion, or danger and anger. Irrespective, here are some good colour matches for red.