Add to Cart Compare Humidity Controller 0 to 99%, relay output - SU-503B Samwon Eng MSRP: Now: $80.00 Was: SU-503B from Samwon Eng. is a humidity regulator with a sensor that is adoption of Honeywell Company’s precise humidity sensor. Operational on both AC and DC (optional). Brand Information “Samwon Eng” is a Korean... MSRP: Now: $80.00 Was: Add to Cart Compare Qty in Cart: 0 Quantity: Decrease Quantity: Increase Quantity: Price: MSRP: Now: $80.00 Was: Subtotal: Add to Cart