The Weathermatic SmartLine SLM12 is a 12-station expansion module that adds scalable zone capacity, on-board diagnostics, and SmartLine ET intelligence to compatible controllers. It supports both Basic and Smart modes so installers can use conventional programming or enable automatic ET-based adjustments for improved water management. 12-zone expansion: Adds up to 12 irrigation stations to compatible SmartLine controllers (SL4800, SL1600, PL1600 and similar), allowing simple capacity increases without replacing the controller. Dual operating modes: Basic mode offers conventional programming; Smart mode uses ET Watering to automatically adjust duration, frequency, and soak times based on environmental data. Diagnostics and troubleshooting: Fault review shows open/shorted zones; on-board multimeter reports transformer voltage and milliamps; built-in valve locator helps identify and exercise solenoids. Performance review: Menus display ET deficits by zone, accumulated run times, maximum run limits, minimum soak times, and recent high/low temperature history to fine-tune schedules. Remote management: Compatible with the SmartLink network for remote access and monitoring via computer, tablet, or smartphone. Installer-friendly: No battery required; modules must be installed left-to-right with no gaps and require AC power for recognition. Programmable rain delay and standard installation documentation simplify setup. Designed for contractors and facilities that need weather-responsive, scalable irrigation control, the SLM12 provides clear diagnostics, valve locating, and SmartLine connectivity to reduce water use and simplify service. Manuals and installation guides are available for site-specific setup and commissioning.
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