Answer
Jan 19, 2015 - 12:00 AM
Thank you for your inquiry. The Optex® Wireless Indoor_Outdoor Alert Systems, item #18160 is a motion sensor. It uses passive infrared to detect motion and signals to receivers. You would place the transmitter where you would like to have the motion sensor, then you can put the receiver where you will be. The distance that it will be heard will depend on how loud your work area is. Please let us know if we may assist further. Thank you and have a great day!
