Buying Guides Related Products Quick view PO1-C80 $64.42 MSRP: Plug-In Triac (Option Slot 1) Quick view PO1-C50 $56.00 MSRP: Plug-In SSR Driver (Option Slot 1) Quick view PO1-C21 $91.00 MSRP: Plug-In Linear Output (Option Slot 1) Quick view PO1-S20 $56.00 MSRP: Plug-In Option Board Quick view PO1-T80 - Plug-In Triac (Pro EC44) Opt. Slot 1 $56.00 MSRP: Quick view PO1-R10 $69.00 MSRP: Temperature Relay Quick view PO2-C10 $40.00 MSRP: Relay Board Quick view PO2-R10 $69.00 MSRP: Plug-In Relay (Pro EC44) Opt. Slot 2 & 3 Quick view 1411D-6501 $1,611.86 MSRP: Reflex,Self-Contained,115Vac,11-Series,Plug-In Relay