The Galcon 800248 AC-24 Controller (TGL8M) is a powerful, commercial-grade irrigation timer designed to handle extensive and growing landscape projects. Housed in a durable exterior cabinet built for hardwired outdoor installation, this base model controls 8 stations out of the box but is easily expandable up to a massive 24 stations using 4-station add-on modules (TGLMOD4). When paired with standard 24V AC irrigation valves, the Galcon 800248 provides unmatched reliability for large-scale residential, municipal, and commercial agricultural setups.
What makes the Galcon 800248 truly exceptional is its incredible versatility. It features two distinct modes of operation: you can group valves together using standard weekly/cyclical programming (up to 3 programs), or you can program each valve completely independently. Need to manage more than just water? This controller includes a unique auxiliary program specifically designed to automate landscape lighting or water features. With extensive watering durations from 1 minute up to 9 hours, water budgeting, and a dedicated master valve port, this AC timer delivers professional-level control for any application.
Detailed specifications for system planning.
| Specification | Details |
|---|---|
| Controller Type | AC Powered, Expandable Multi-Station |
| Stations | 8 Base Stations (Expandable up to 24) |
| Power Requirement | Hardwired AC Power |
| Programs & Start Times | 3 Programs (or Independent), up to 4 start times per day |
| Run Time Duration | 1 Minute to 9 Hours |
| Watering Intervals | 1 to 30 Days |
| Backup Power | One 9-Volt Alkaline Battery (Not Included) |
| Compatible Valves | Standard 24V AC Solenoid Valves |
| Sensor & Pump Ports | Rain Sensor and Master Valve / Pump Start |
| Warranty | 3-Year Manufacturer Warranty |
| MPN | 800248 (TGL8M) |
Get your commercial AC controller running smoothly.
Step 1: Mount & Hardwire the Enclosure
Secure the exterior housing to an outdoor wall. Since this is a hardwired model, connect the internal transformer directly to your AC electrical supply strictly following local electrical codes (professional installation recommended).
Step 2: Install Backup Battery
Install a fresh 9-volt alkaline battery inside the control panel to maintain your clock and programming memory during power outages.
Step 3: Wire Valves & Modules
Run multi-strand wire from your 24V AC valve manifolds to the controller. Connect the common wire and individual station wires. If expanding beyond 8 stations, snap in your 4-station add-on modules (TGLMOD4) and wire accordingly.
Step 4: Select Mode & Program
Choose whether to use standard weekly/cyclical programming or set the controller to operate each valve independently. Input your desired intervals and durations (from 1 minute up to 9 hours).
Does the Galcon 800248 plug into a standard wall outlet?
No, this commercial-grade exterior controller does not have a standard plug. It is designed to be hardwired directly into your building's AC electrical system.
Due to the hardwired nature of this installation, hiring a licensed electrician is highly recommended to ensure safety and code compliance.
Can this controller run landscape lighting?
Yes, the Galcon 800248 features a dedicated auxiliary program that can be used to easily automate outdoor landscape lighting, fountains, or other electrically actuated yard features.
This unique feature allows you to centralize both your irrigation and your outdoor ambiance from one commercial control box.
What valves work with the Galcon 800248 controller?
This AC controller must be paired with standard 24V AC irrigation valves. It will not operate DC latching solenoids commonly used with battery-operated timers.
Ensure all valves in your system manifold are strictly AC-compatible before wiring them into the station terminals.
How should I prepare my Galcon 800248 for spring watering?
Prepare the Galcon 800248 for spring by replacing the 9-volt backup alkaline battery, testing your AC valve connections, and using the water budgeting feature to run a scaled-back schedule for early-season moisture levels.
As the season warms up, simply adjust the global water budget percentage upward to increase run times across all active stations simultaneously.
Please note the requirements for this hardwired AC controller:
Ensure your multi-zone AC irrigation setup is ready to run with these recommended products:
Apr 2nd 2026
Apr 1st 2026
Mar 31st 2026
Mar 30th 2026
