KS2521
The KS2521 from Beckhoff features an aluminum body and IP65 protection. Part of the KS Digital Input Modules series, it operates at 24V DC and supports temperatures from -10°C to 50°C. It is sub-base mounted and draws 1.0W of power while providing two input channels.
It handles signal frequencies from 100Hz to 500kHz and isolation up to 500V between internal bus and field connections. The module has a response time of 15ms. Weighing 220g, it ensures compact installation.