Weathermatic SLM12-4800 Expansion Module 12 Station

Product Description

The Weathermatic SLM12-4800 is a 12-station expansion module designed for Weathermatic PL4800 and SL4800 controllers. It adds scalable zone capacity and SmartLine ET intelligence to compatible controllers. Installers can use conventional programming or enable automatic ET-based adjustments for improved water management. The controller automatically recognizes added zones upon installation.

• Adds up to 12 irrigation stations to compatible SmartLine controllers (SL4800, SL1600, PL1600 and similar)
• Basic mode offers conventional programming
• Smart mode uses ET Watering to automatically adjust duration, frequency, and soak times based on environmental data

Product Highlights

This module provides clear diagnostics, valve locating, and SmartLine connectivity to reduce water use and simplify service.

Product Information

Standard Information

• Brand: WEATHERMATIC
• Manufacturer Part Number: SLM12-4800

Technical Specifications

• Type: Expansion Module
• Station Expansion: 12
• Controller Compatibility: Weathermatic SL4800 Controller
• Zones: 12
• Controller Type: SmartLine SL4800
• Module: SLM12-4800 12-zone module
• Expandability: Up to 48 zones with additional SLM12-4800 modules
• Power Requirement: 60 mA on a 120VAC line in idle mode with 48 zones utilized
• Valve Common: Two valve commons provided
• Master Valve/Pump Terminal: MV/P terminal provided
• Sensor Terminal: SEN terminal for optional rain, freeze, or wind sensor
• Auxiliary Power: Terminals provided for auxiliary power connections requiring 24V power
• SmartLink Connection: Two RJ11 connectors provided for use with an optional SmartLink Aircard