The Silver Controller is designed to provide the ability to adjust the output of silver recovery equipment. In the three level mode (at a predetermined silver concentration) the controller will provide a switch closure and activate a receptacle. This will either turn a silver recovery cell ON/OFF or will start the Silver Cell in the low current position. When the silver exceeds a second silver concentration (e.g. 0.75 gm/l), the high setting on the Silver Cell power supply is activated. When the controller is in the high mode, a second relay is activated as well as an additional receptacle. Both the high and low settings are equipped with adjustable deadband controls. The deadband controls adjust the range during which the set-point is activated (e.g. ON at 0.7 gm/1, OFF at 0.5 gm/1.). In addition to preset high and low settings, the Silver Controller provides a 1-5 VDC and 4-20 ma. output for proportional controls. The Silver Controller is easily installed in the circulating line with a 1 1/2" PVC "T" provided with the unit.