SATCO Lighting S9318 3 Watt/9 Watt/12W, A19 LED, 3-way, Frosted, 4000K, Medium Base, 220 degree Beam Angle, 120V

Yes. The S9318 is a true 3-way A19 LED, so it steps through all three levels on a 3-way socket and turn knob: 3W, 9W, and 12W, putting out 280, 950, and 1200 lumens. In a standard single-circuit medium socket it will light, but you only get one output level.

No. The S9318 is not dimmable. On a dimmer you will get flicker, buzz, or no light at the low end. Use it on a standard 3-way socket with a rotary or pull-chain selector instead. If the fixture is on a wall dimmer, pick a dimmable lamp.

It is an enclosed rated lamp, so a closed globe or a tightly shaded table lamp is fine. It is also damp location rated, which covers a covered porch or a bathroom vanity, but not direct weather exposure. Satco lists it for indoor use.

No. This lamp is flagged non-compliant for California, so it cannot be sold into that state. For CA properties, specify a Title 20 compliant 3-way A19 LED.

Probably, yes. The S9318 is 4000K, a neutral white that reads crisp and slightly blue next to the 2700K warm tone most hotel and apartment residential lamps use. It suits offices, laundry rooms, workshops, and back-of-house areas. For guest rooms and living spaces where you want the incandescent look, choose a 2700K version of the same 3-way A19 instead. The color is fixed, not selectable.

The beam spread is 220 degrees, so light throws well past the horizontal, out the sides and downward as well as up. That is what you want in an open table or floor lamp where a narrow LED beam would leave a dark ring under the shade. The frosted lens diffuses the LED sources so you do not see hot spots through a thin shade.

No, it is not DLC listed, so it will not qualify under a DesignLights Consortium rebate program. It is FCC compliant for RF emissions, which matters if you are putting a lot of them near tenant electronics.

Burning position is universal. Base-up, base-down, or horizontal all work, so it can go in a ceiling pan, a wall sconce, or an upright table lamp without affecting rated life.

CRI is 80, which is the standard grade for general LED lamps and typical for corridor, office, and utility lighting. Skin tones and finishes will look a bit flatter than they did under incandescent. For retail display or anywhere color rendering is being judged, look for a 90 CRI lamp instead.

Rated average life is 25,000 hours. Current draw runs 0.025A at the low step, 0.075A at the middle, and 0.100A at full output on 120V, 60Hz. Even at high, a circuit of these draws a fraction of what the 100W incandescents they replace pulled.