Skip to content
Weathermatic SmartWire SLGDT lightning arrestor showing compact sealed housing with red, black and green lead wires for 2‑wire system grounding and installation guidance.

Weathermatic SmartWire SLGDT Lightning Arrestor (2-Wire)

Brand: Weathermatic
Save 27%
$192.37
$139.47
SKU SLGDT
In Stock (5)

Notify me when back in stock

Designed for Weathermatic SmartWire 2‑wire irrigation systems, the SLGDT Lightning Arrestor provides dedicated surge protection where it’s needed most. Compact and fully sealed, the SLGDT helps dissipate static charges from nearby lightning strikes to reduce damage to decoders, controllers, and other SmartWire components.

  • SmartWire compatibility: Installs directly on SmartWire red and black conductors; requires no power from the 2‑wire system and is compatible only with SmartWire networks.
  • Robust protection: Gas-discharge tube design protects approximately a 300‑foot radius and adds an extra measure of defense beyond built-in component safeguards.
  • Durable construction: Sealed and impervious to moisture, salts, fertilizers and mild chemicals; shock resistant and rated for -20° to 60° C operation.
  • Easy installation: Connect the red and black leads to the 2‑wire path and attach the green ground wire to a proper earth ground using the supplied SLCONN connector.
  • Placement guidance: Install an SLGDT at the controller location, at the end of long runs, and approximately every 600 feet along extended 2‑wire paths for best protection.
  • Manufacturer warranty: Standard limited warranty is two years; warranty extends to three years when installed with Weathermatic SLWIRE cable and SLCONN connectors.

The SLGDT is compact (approximately 2"×2"×1") and may be buried directly in soil where required. It requires minimal maintenance and provides a cost-effective, low-effort way to protect commercial SmartWire installations from lightning‑related surges and static events.

Reviews

Frequently Asked Questions

What controllers and systems is the SLGDT compatible with?
The SLGDT is designed for Weathermatic SmartWire 2‑wire systems and connects only to SmartWire red/black conductors; it requires no additional power.
Where should I place SLGDT units for best protection?
Install one near the controller, at run ends, and roughly every 600 feet along long 2‑wire paths; ground the green lead to an earth ground per instructions.
What warranty and durability can I expect from the SLGDT?
Standard manufacturer limited warranty is two years; extends to three years when used with SLWIRE cable and SLCONN connectors. Unit is sealed and shock resistant.