https://www.phoenixcontact.com/en-gb/products/relay-module-emg-17-relksr-2421-21-lc-2940391
EMG 17-REL/KSR- 24/21-21-LC - Relay module - 2940391 | Phoenix Contact
Relay module, with soldered-in miniature switching relay, contact (AgNi): medium to large loads, 2 changeover contacts, input voltage 24 V AC/DC