The 700-FS can be panel or DIN rail mounted. Allowing at least 5 mm of open space on each side of the 700-FS for proper ventilation, should result in best long term performance.
A-B Rockwell 700-FSF3JU23 High Performance Timing Relay, Flasher/Pulse .15hr to 3hr **FUNCTIONAL REPLACEMENT-BACKWARD COMPATIBLE to 700-FSM8UU23**