Omron E32-T24S is a through-beam fiber optic sensor head with a standard 2 m plastic-core cable. The sensing head measures 20.5 mm long, 3.5 mm diameter — small enough for tight fixture mounts — and detects objects down to 0.1 mm diameter. The cable is cut-to-length on installation and tolerates a bend radius down to R10, so it routes around panel edges without kinking.
The 0.1 mm diameter minimum sensing object and 3.5 mm head diameter are spec sheet limits for the head. Plastic core material suits moderate vibration. Bending radius is R10, meaning the cable can be routed at 10 mm radius minimum. This is a real advantage in crowded cabinets; just avoid sharp edges or repeated flexing.