Hayward AQL2-TW-RF-PS-4 White, PS-4 Wireless Tabletop Remote. Full function and programmable, with easy-to-read scrolling displays of all pool and spa functions, it operates up to 500 feet away from Pro Logic base unit. Low profile, mobile design with rechargeable long-life internal batteries. Compact, lightweight, full- function control of Total Pool Chemistry and ColorLogic 4.0.