Automatic reset button opening 22 MM metallic lid+box XB2-BA21, black, 1 usually open XB2-BA31, green, 1 usually open XB2-BA42, red, 1 usually closed XB2-BA51, yellow, 1 normally open XB2-BA61, blue, 1 usually open Package Content: 1 pcs Auto Reset Button Switch+box (Optional Color)