What the thin compact slot means for your panel layout
The EE-SX870-2M is a through-beam slot sensor — the emitter and receiver sit in a single U-shaped housing, so there's no separate alignment of two heads. The 'thin compact' profile means it fits into tight spaces where a standard M18 barrel or fork sensor won't clear, like along a conveyor rail or inside a pick-and-place gantry.
What compliance docs come with the sensor
Omron typically provides RoHS and REACH declarations for current-production sensors like this one. No UL, CSA, or IEC certification numbers are listed in the available spec record — confirm the specific compliance package with the order if your site requires a UL mark for the panel.