Controller Input Voltage 12 to 24V AC Output Type Analog Relay 2 A Amps Timers Programmable Yes Clock 4 Seven-Segment Display Display Port Type LAN Expansion Bus contacts usage Volt-free contacts Discount Schedule PC12 Environmental Disclosure Product Environmental Profile Modicon M171 Optimized Display 22 I/Os mounting support DIN rail product specific application HVAC and pumping solution relative humidity 10 90 Percent non-condensing Depth 2.43 in Height 3.43 in