4 x discrete digital inputs and 4 x 0-10V analog inputs only. Suitable for controlling a water pump/water tank etc...Pressure + Level Control - ZelioSKU: SR3-PLC$2,000.00PricePlease specify any special programming requirements?ecial programming requirements?500QuantityAdd to CartPRODUCT INFOPLC Relay Module includes custom programming. RETURN & REFUND POLICYNon Returnable! SHIPPING INFOPlease email to confirm shipping costs. PRODUCT INFO?All SR3 modules and extension modules sold include the programming of the module as per the customers requirements.