Click to expand Tap to zoom OPTO 22 G4PB16I G4 ODC24 RELAY CONTROLLER by EcoTech Solutions Inc. Sale $40.00 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart OPTO 22 G4PB16I G4 ODC24 RELAY CONTROLLER NEW OUT OF THE BOX