Amazon offers the
Philips Hue Wireless Motion Sensor for $30.71. Clip the coupon on the product page to drop it to
$22.06. With
free shipping, that's $10 under last week's mention and the lowest price we could find by $10. This sensor triggers your Philips Hue lights and features an integrated daylight sensor, 100° field of view, and 16.4-foot range. Deal ends August 1.
Note: This item requires a Philips Hue Bridge (sold separately) to work.