C&K Systems DualTec lll Combination Microwave-Passive Infrared Detector DT-335.

These have never been used. They are NOS - New Old Stock. The actual unit shown is what they look like but that unit is used and not included, just modeling because the actual units have never been taken out of the box. There are 2 units for sale, the price is for 1 unit. Any questions, please ask. Thanks for looking.