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-FSA3EZ12 High Performance Timing Relay, On Delay .05min to 1min, 12V **FUNCTIONAL REPLACEMENT-ENGINEERING REQUIRED to 700-FEM6TZ12**