Magnetic Reed Switches -- N Scale - For Train Detection, 5 Sets of Switches & Magnets

2 x 3mm Surface Mount LED pkg(4) -- Red

Miniature Toggle Switches -- SPDT 5Amp 120V Center Off pkg(8)

8 Ohm Speakers -- 1-7/8 x 2-7/8" 4.6 x 7.1cm Rectangular x 15/16" 23.8mm High (Fits O, G & #1)