I got this to do a retrofit on an old 175watt mercury vapor light with a Mogul base, replacing it with a Dephen 60 watt corn light with the same Mogul style base. After removing the ballast transformer, per instructions with the Dephen unit, I fabricated a custom mounting plate for the photocontrol so it could sit where the previous three-prong control had been atop the fixture. The instructions with the control say not to face the electric eye directly south, and that the ideal orientation is to the north. I faced it west, and removed the light-limiting clip, with the idea that I wanted it to turn the light on later in the dusk-to-dark period, just to save electricity. One thing that doesn't show in the photo is that the wires up inside the stem mount are sealed with what appears to be a silicone material - a nice attention to detail, I presume to prevent insect and moisture intrusion. The instruction sheet was easy to understand, and gave clear information on the wiring and various operational characteristics. After mounting the modified fixture I came back in the late afternoon to observe its function. The light came on right at the time I'd consider ideal for this application. Now I'll just hope that the photocontrol continues to operate properly for a long time.
| Manufacturer | Intermatic |
|---|---|
| Part Number | K4121C |
| Item Weight | 3.2 ounces |
| Product Dimensions | 6.88 x 5 x 3.75 inches |
| Item model number | K4121C |
| Is Discontinued By Manufacturer | No |
| Color | Color |
| Style | Stem Mount |
| Finish | Gray |
| Material | polycarbonate |
| Power Source | wired electric |
| Voltage | 120 Volts |
| Item Package Quantity | 1 |
| Number Of Pieces | 1 |
| Measurement System | inch |
| Usage | personal |
| Included Components | K4121C |
| Batteries Included? | No |
| Batteries Required? | No |
| Warranty Description | 2 Years |
| National Stock Number | 6110-00-294-0873 |
