HC-SR501 PIR Sensor Acrylic Mounting Bracket

A bare PIR sensor module has no built-in mounting provision beyond its through-hole pins, which makes securely attaching it to a wall, ceiling, or project enclosure awkward without a proper bracket. This acrylic bracket solves that specifically for the HC-SR501 (the most common hobbyist PIR sensor), with two screw holes sized exactly for that module's mounting pattern plus two further holes for attaching the whole assembly to a project surface.

Clear acrylic construction is a deliberate choice, not just cosmetic - it keeps the sensor's white detection dome fully unobstructed from any angle, since anything blocking part of the dome reduces the sensor's effective detection range and coverage angle. Nuts and screws are included, so mounting the sensor is a complete, ready-to-assemble solution rather than needing separately sourced hardware.

Common uses are wall or ceiling mounting a PIR motion sensor for security or automatic-lighting projects, angling a PIR sensor to cover a specific detection zone, and any HC-SR501-based project needing a clean, purpose-fit mounting solution rather than improvised hardware.