- 700-FE Economy General Purpose Timing Relay700-FE General Purpose Electronic Timers and Counters700-FS High Performance General Purpose Timing Relay700-FS High Performance Timing Relay700-HN Miniature Multi-Function, Multi-Range Timing Relay700-HR Multi-Function, Multi-Range Timing Relay700-HT Single Range Tube Base Timing Relay700-HTA Alternating Relay700-HV Repeat Cycle Tube Base Timing Relay700-HX Multi-Function, Multi-Range Digital Timing Relay