The Raytripper is an electronic system using a sensor and electromagnet that releases the gate on a Missy Trap when the dog steps into an invisible infrared beam. Powered by battery, AC outlet or from a car’s cigarette lighter, the Raytripper is used with all of the Retrievers’ trap designs, including the Missy Trap and smaller Cash Trap. 

Documentation: Raytripper Owner’s Manual

Building Your Raytripper: The “Build Your Own Raytripper” tutorial below focuses on how to wire the sensor. Once you have the sensor prepared, see “Raytripper Magnet & Mounts” for instructions on how to finish your Raytripper for use in the field.



Below is a complete list of parts, supplies and tools needed to build your own Raytripper. Links are provided to online retailers to show exactly what we recommend, but it may be more cost-effective to purchase common items from a local hardware store. With some items, you’ll have parts leftover, which will reduce the cost of making a second Raytripper.



Heat-Shrink Tubing (assorted sizes)


$6 ea

Quick Clips (need 2)

$1.40 ea

Eyelet Screws (need 2)

$1 ea



1×4 Common Pine Board – (Cut to Two 2 1/2″ Lengths — Buy Locally)


#6 1 1/2″ Wood Screws (Need 2 — Buy Locally)


#8 – 32 x 1/2″ Machine Screws with Nuts and Washers to Fit (Need 14 — Buy Locally)


Wire Hook Straps w/ 1″ Flat Nylon (2 ft long)


TOTAL: $200 -$220


  • Wire stripper
  • Crimping Tool
  • Diagonal cutter
  • Heat Gun
  • X-Acto Knife
  • 1″ Spade Bit
  • 1/8″ Drill Bit
  • 7/32″ Drill Bit
  • 3/16″ Drill Bit
  • Pliers or Channel Locks
  • Phillips Screwdriver
  • Drill
  • Chop Saw
  • 9mm and 10mm Wrenches



Charger (will also charge a 6v external trailcam battery)