Use Zing Ear SNR-100WF photoelectric switch to Add dusk to dawn feature to your existing outdoor lamp or to replace an old photocell sensor. It turns the light on at night and off during the day to save energy and extend the life of your light bulb. SNR-100WF photoresistor comes with three leads (White, Black, and Red – 5 inches each), 3 wire connectors, and comprehensive wiring instructions for easy installation.
Zing Ear SNR-100WF Specifications:
- LED photocell switch supports incandescent, halogen, dimmable CFL, and dimmable LED light bulbs (Not-dimmable light bulbs are not supported)
- Can be used as lamp post photocell or in a lantern
- Electrical details: 120V 60Hz 100w Max.
- Includes rubber ring to seal photocell against water
- Lamppost hole size required: 7/16 inch
- Leads length: 5 inches
- Leads color: White, Black, and Red
Useful Links
- FAQ page
- Click here to access the photocell wiring diagram
- Do you have a question about this dusk to dawn photocell? send us an email via the contact us form


Works perfect, Fast shipping and Pricing.
We needed to replace the photocell in our outdoor lights. These works out great!!
Thank goodness that you had the right part, so much cheaper than a whole new fixture.
Thanks again.
I order this switch for my porch light dimmer that melted from plugging Christmas decorations into the light. The price for this switch is awesome. No, trouble installing it. Shipping came as expected. This help me save $60 for my porch lights. Thanks so much for having them in stock and perfect condition and no problems with the order at all, even came with warranty. Love It!