In fact, you can decide whether you want a reflector or not according to whether the prefix in your model has the letter L.

Cisco photoelectric internal

Generally, the photoelectric prefix on the opposite side is WS/WE or VSE with letters S and E.

Specular reflection photoelectricity is usually prefixed with WL or VL, both of which have the letter l.

Diffuse reflection photoelectric is usually prefixed with WT or VTE, both of which have the letter T.

Special cases include diffuse reflection and reflection band L. For example, model WT 12L-2B530 is diffuse reflection, and L stands for laser.

It is easy to distinguish that the L of the laser photoelectric switch is at the last place of the prefix, and the L reflected by the mirror is generally at the second place.