Quantity   Component name
1 × Epoxy glue usual epoxy
1 × Nylon strap typical nylon strap, 2000 x 20mm
1 × Magnets 10x6x3mm rare-earth
1 × LM2903 SO-8 comparator
1 × SN74LVC1G series logic gates NORx2, NANDx1, ANDx1