Cells with only two prongs will use 2 of the 3 pins on the cell cord. Either end port can be plugged off with silicon.
Compatible with:
AutoPilot Pool Pilot Digital (75003), Pool Pilot Digital Nano (75040 & 75041) & Pool Pilot Digital Nano+ (75042 & 75043) Controllers.
NOT Compatible with:
AutoPilot Pool Pilot Digital (DIG-220) & Pool Pilot Soft Touch (ST-220) Controllers: These units require AutoPilot Pool Pilot part # 952-ST/DIG.