WAGO 753-513/000-001 MSRP: Now: $106.40 Was: 2-channel digital output; AC 250 V; 2.0 A; Potential-free; 2 make contact 753-513/000-001
WAGO 753-661/000-004 MSRP: Now: $464.50 Was: Fail-safe 4-channel digital input; 24 VDC; PROFIsafe 753-661/000-004
WAGO 753-469/003-000 MSRP: Now: $486.00 Was: 2-channel analog input; Thermocouple K; Diagnostics, adjustable 753-469/003-000