Replacement AC/DC transformer power supply for most Chandler Systems water softeners and filters. 

• 12v DC, 500 mA output
• Works with 100-240 vAC input 
• Compatible with CSI Signature 1, Signature 2, Signature 3 or WaterSoft Isobar 2 or 3 Control Valves
• Actual power supply may differ in appearance from the power supply shown