Check the listing for details. Paranormal Ghost Hunting Infrared Motion Detector with Battery. Listed at 39.00 USD. Paranormal Ghost Hunting Infrared Motion Detector with Battery Description:Infrared Motion Detector: Portable motion sensor that runs on a single 9-volt battery. It detects motion based on temperature. Infrared light hits the sensor; when it changes, the alarm is triggered. Guarantee:The item is guaranteed for 60 days after receipt. I will refund or replace unit if defective depending on inventory availability. Please contact me if you have any problems. Terms:Immediate payment by PayPal only. If you live in Indiana, I have to charge 7% sales tax. Shipping and handling is via US Mail. I will provide you with a tracking number. I will gladly upgrade to a faster shipping rate if you wish to pay for same. I will gladly combine shipping costs. Absolutely no international shipments; please do not ask.