Top Assembly C200 Standard Controller, DeltaP integrated with 4 way valve outlet; Special features: (1) 4-20 mA output, (1) 4-20 mA input, (2) programmable digital inputs, (2) programmable relay outputs, Specifications: AC supply: 110/110V/230V, DC supply: 24 V, Operating frequency: 50/60 Hz, Protection rating: IP-66 for different brands of collectors