Omron's E2B proximity sensors promise the perfect fit to your particular needs. With the wide range of models in the E2B family, you can choose the one that exactly meets your needs. For example, there are four different sizes: M8, M12, M18, and M30, each one with single- or double-sensing distances, shielded and unshielded. There are also choices of short or long bodies, two connecting methods, and four output types.