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Warm Notes The bulbs must have electricity to work. Don’t turn the light switch off. Make sure that there should be a certain distance between two bulbs(more than 3.3 FT), because light too dense can cause the bulb to not work. We do Not recommend to install the sensor bulb in a sealed light fixture such as a sealed wall lantern since the LED light causes heat dissipation. Why choose Haofy Dusk to Dawn Light Bulb? Convenient and Energy Saving You don’t have to think about turning the porch lights on at night anymore! No more running down the stairs to turn on outside lights! You don’t have to remember to turn lights off in the morning anymore! They go on at dusk and off at dawn, which means some savings on electric bill. Come on / shut off automatically, enhancing physical security. Material: Aluminum + PC Power: 9Watt luminous flux: 600lm Base: E26/E27 Input Voltage: 85-265V AC Color: Warm White 2700K Beam Angle: 180 degree Package: 2 pcs Automatically Lighting Up Your Home or Patio Easy To Install Simply screw into any standard E26/27 light socket or fixture, no wires or additional dusk-to-dawn fixtures required. Wide Light Angle These Bulbs can light up the most of corner with 180° light angle. It is one of the most practical LEDs we’ve ever tested. Auto Turn on off The light automatically turns on when the ambient light brightness is less than 15 lux, off when it’s over 40 lux. Wattage 7W 12W 12W 9W 9W Color Temperature Cold White Cold White Cold White Cold White Cold White Montion Sensor ✓ ✓ Light Sensor ✓ ✓ ✓ Sensor Angle 180 degree 180 degree 180 degree 120 degree 120 degree Luminous Flux 600lm 1000lm 1000lm 600lm 600lm Package 2 pack 3 pac 1 pack 3 pac 1 pack Check Offer Price Weight: 140 g Dimensions: 12.5 x 12 x 6.2 cm; 140 Grams Brand: Haofy Pack Quantity: 2 Batteries Required: No Batteries Included: No Manufacture: Haofy Quantity: 2