Replacement transformer specifically built for Weathermatic SmartLine SL1600 and PL1600 irrigation controllers. Rugged construction and corrosion-resistant materials make it suitable for long-term use in controller cabinets and protected outdoor locations. Controller compatibility: Direct replacement for SmartLine SL1600 and PL1600 series controllers for reliable low-voltage power. Electrical rating: Designed for 120V AC input and delivers the low-voltage output required by SmartLine controllers; includes internal protection for safe operation. Durable construction: Stainless-steel housing and copper windings provide corrosion resistance and long service life in damp environments. Easy replacement: Form-fit design and mounting provisions match SmartLine controller installations for straightforward swap-out. Trusted component: OEM Weathermatic part 170-085SA manufactured to match SmartLine specifications and installation guides. Includes links to SmartLine documentation and installation guides for step-by-step replacement and safety instructions. Professional installation or an electrician is recommended when working with line voltage. Keep original controller manuals for reference and warranty considerations.