K4221C Photo Controls feature stem and swivel mounting, with thermal-type controls. Thermal-type photo controls, which are available in single or multi-voltage models, provide dusk-to-dawn lighting control and a delay action, which eliminates loads switching OFF due to car headlights, and lightning. The thermal-type controls feature a cadmium sulfide photocell and a sonic-welded polycarbonate case and lens to seal out moisture. The design utilizes a dual temperature compensating bi-metal and composite resistor for reliable long life operation over ambient temperature extremes.
Specifications
| Brand Name | Intermatic | Item Name | Photocontrol |
| Type | Thermal | Voltage Rating | 120 V |
| Ballast Load | 8.3 A 1000 VA | Sensor Type | Separate Light Sensor |
| Mounting | Stem and Swivel Mount | Amperage Rating | 15 A |
| Frequency Rating | 50/60 Hz | Power Rating | 1800 W |
| Material | Thermoplastic | Color | Gray |
| Finish | Matt | Dimensions | 39.7 x 39.7 x 139.7 mm |
| Temperature Rating | 70.0 degrees C | For Use With | Lighting, pathways |
| Standards | UL Recognized, CSA, Title CA 20 Listed | Application | Parking lot lighting, landscape lighting, exterior lighting, street lighting |