These include Gardner ATTs (Illuminated Wheel) Underlit Bite Alarms. The LED position on the Underlit ATT heads has been moved from the front face of the alarm to under the wheel, lighting up the roller when a bite occurs.
Great stuff, great price. I asked for orange wheels on the alarms and got green? Not a big deal. They were for my dad. He will get some orange ones in time. Alarms are great tho.