Description
Product Overview
The Summit Lighting Supply Photo Cell Relay Switch is engineered for seamless integration with 3‑inch round outdoor lamp posts. Featuring a pull‑apart connector design, tungsten contact material, and a robust 300‑watt capacity, this unit delivers reliable automatic lighting from dusk to dawn. Certified to UL standards and operating on 120 V, it offers three terminals for straightforward 3‑wire connections, eliminating the need for complex rewiring. Its compact 1 × 1 × 1 inch footprint and lightweight construction (1.6 oz) make it an unobtrusive yet powerful addition to any exterior lighting system.
Usage
Designed for residential driveways, commercial parking areas, and municipal post‑mounted fixtures, this relay switch ensures consistent illumination when it matters most. Install it on any standard 3‑inch round post to convert existing lighting into a photo‑controlled system, enhancing security and energy efficiency. Ideal for homeowners seeking hassle‑free night‑time lighting, property managers maintaining large outdoor spaces, and contractors installing new post‑light projects.

Why Choose Us
Summit Lighting Supply combines decades of lighting expertise with rigorous quality control. Each relay is UL listed, guaranteeing compliance with safety standards. The pull‑apart connector eliminates the need for soldering or specialized tools, reducing installation time and labor costs. Tungsten contacts provide superior conductivity and longevity, ensuring the switch performs reliably year after year, even in harsh weather conditions.
Key Features
- Automatic dusk‑to‑dawn operation for energy‑saving illumination
- Pull‑apart connectors enable quick, tool‑free installation
- Durable tungsten contacts ensure long‑term reliability
- UL listed and rated for 300 W at 120 V for safe performance
- Compact 1‑inch cube design fits standard 3‑inch round lamp posts
FAQ
Can this relay be used with LED lamps?
Yes, the relay supports LED fixtures as long as the total wattage does not exceed 300 W.
Do I need a separate power source?
No additional power source is required; the unit operates directly from the existing 120 V line feeding the lamp post.
Is rewiring ever necessary?
Installation uses the existing three‑wire setup; the pull‑apart connectors replace traditional wire nuts, so no rewiring is needed.
What maintenance does the relay require?
Periodically check the photo sensor for dirt or debris and clean with a soft cloth to maintain optimal light detection.
Is this product covered by a warranty?
Summit Lighting Supply offers a one‑year limited warranty covering manufacturing defects.




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