Heath Zenith 180-Degree Wireless PIR Motion Sensor, ...

• PIR motion sensor with 180-degree detection arc
• For indoor and outdoor use
• Detects motion up to 70 feet away
• Works with Heath Zenith receivers
• White; 3.875 by 3.125 by 3.875 inches

Amazon.com Product Review:
Use this motion sensor with Heath Zenith receivers to remotely activate lights up to 100 feet away-perfect for long driveways, walkways, backyards, and so on. The sensor features a wide 180-degree sensitivity range. It detects motion up to 70 feet away and the light timer and motion sensitivity are both adjustable. For indoor and outdoor use. Note that the receiver requires two AA batteries (not included).--Josh Dettweiler Motion sensor, mounting bracket, hardware kit

Not Pleased with this Motion Sensor:
Ordered as a replacement to a broken sensor. It arrived and did not work at all. I have three of these and the outdoor light. I am not at all happy with the setup. Range is limited, sensors do not detect consistantly, and the light remains on at times(all night). A problem with the light fixture is that it will not fit a floursent bulb. Do yourself a favor and forget about these. Get a RAB motion sensor light - They work!

sometimes yes sometimes no:
We have had several of these over the years. Lightening or any erratic electricity seems to take them out pretty easily. Also, when you buy a replacement it may or may not work. Sometimes we have to buy three or four to get one that works for a while. We keep trying because we need the sound alert in the house that someone or something is coming.