3-Digit DisplayLowest Cost
7SD Single Display
7SM Dual Display
7SH Heat/Cool
4-Digit Display7SF Heat/Cool
7SC Analog Output
7SP Programmer
7SI Indicator
7SL FM Approved Limitrol
3-Digit Display
7EM Heat/Cool
4- Digit Display
7EF Vertical Control
7EH Horizontal Control
7EC Analog Output Control
7ES Actuator Control
7HI Horizontal Indicator
7HK Virtical Indicator
7HL Horizontal Hi Perf Indicator