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Safety alert – Passive infrared (PIR) sensors

Energy Safe Victoria (ESV) has identified that there is a significant risk of electric shock from identified PIR sensors during installation, service or maintenance work.

Last September, an electrician received an electric shock while installing a passive infrared sensor (PIR) sensor of the type and construction identified below.

Example: external construction (left) and internal view (centre, right) highlighting areas of exposed live parts.

This type of unit is most commonly installed in commercial or industrial premises.

When the cover of these PIR sensors is removed, the user is exposed to live parts including the main’s terminals and PIR sensor head (240V~). These parts are highlighted in red across the images above.

Touching the PIR sensor head could result in severe injury or death.

Maintenance and adjustments to settings must be carried out with the power isolated, and by licensed electricians only.

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