Through-beam with long reach
This Omron E3ZT86LOMI is a through-beam photoelectric sensor with a 15 m sensing range – covers longer gaps than most compact photoelectric sensors. PNP output (Light-ON / Dark-ON selectable) and 12–24 V supply, so it fits PLC inputs without extra conversion. Response time is 1 ms, fast enough for most conveyor or part-present detection. It's rated IP67, so dust and washdowns aren't a problem.
How it stacks against the E3ZG81M3JOMS
The E3ZG81M3JOMS is another PNP through-beam with M8 connector, but it's a different animal: 25 mm sensing range (indoor proximity) vs this one's 15 m. The body is larger – 11×40×50 mm vs 10.8×20×31 mm – and it's only IP64, while this one handles IP67. Different bracket, different application. So if you're sourcing a second-source for a panel built around the E3ZG81M3JOMS, this won't drop in without re-mounting and re-aiming. Two different jobs.