Question 1

do you need a hub to connect these to alexa?

Accepted Answer

I have one that came with my Echo Show 10, it paired with the Echo Show and the other Echos can control it no issue.
But you have to have an Echo with Zigbee function - that means the older Echo Plus, or the new 4th gen Echo or an Echo Show 10.
If not, you'll need to use Hue's hub and use the Hue skill to link to your Alexa network.

Of the choices, I recommend the show, because it gives you visuals when installing.  however most my smart devices are wifi using the Smart Life app and intergrate using that skill.

Question 2

Can you change it to cool white?

Accepted Answer

It depends on which model you’re looking at. I’m seeing your question on the “White Ambiance” hue listing, which DOES adjust between warm and cool white. They do sunrise and sunset gradients well, there’s a really neat pale “moonlight” mode, and you can get a spa-like blueish white if you like.

The “Soft White” hue bulbs are just a warm light similar to traditional incandescent bulbs.

Both kinds of lights can use smartphone settings to dim the lights, turn on and off on a schedule, and be grouped into rooms or zones (like all your upstairs lights), and turn on/off when you arrive/leave home. Ambiance are my favorite… I don’t use the colors on my other bulbs much, but these have all the smart features and can be relaxing or mood-lifting like seasonal depression treatment lights. The basic “soft white” lights are still nice, especially for a little lamp where you wish to dim the light comfortably or not have to reach for an awkward switch.

Question 3

Do these bulbs use zigbee or bluetooth to connect alexa devices? description mentions echo dot (3rd gen) which does not include zigbee hub.

Accepted Answer

I'm not entirely sure which Dot i have, it's not the cloth one though i think the previous gen, but it works with these lights even through a floor. I have it down in my kitchen and according to the app it's connected to the echo dot in my office upstairs! I have 2 Echo Flexs downstairs that are closer but their bluetooth might be weaker? My place isn't big so they're not too far away, but it does work through a floor and wanted to make sure that was mentioned. Your mileage may vary!

Question 4

Can anyone explain what you mean when you say you need a hub to connect to Alexa?

Accepted Answer

The hue hub directly controls the bulbs (one hue hub can control 50? bulbs).  Alexa can install a “skill” (an app/program) that communicates with the hue hub. The end result: You say “alexa turn on bedroom light", Alexa passes the request to the hue hub, hub turns the light on, Alexa gets a reply that the request was fulfilled and lights are on.  You can control the hue hub directly with an app, or you can use an apple or google smart device to do the same thing that alexa does.

ASIN	B07QWB3J8W
Accepted Voltage Frequency	100 to 120 Volts and 60 Hertz
Additional Features	Bluetooth Enabled, Dimmable, Zigbee Enabled
Brand Name	Philips Hue
Brightness	806 Lumen
Bulb Base	E26
Bulb Shape Size	A19
Color	White
Color Rendering Index	80
Color Temperature	2700 Kelvin
Connectivity Protocol	Bluetooth
Connectivity Technology	Bluetooth, ZigBee
Control Method	Voice
Controller Type	Amazon Alexa, Google Assistant, Apple HomeKit
Customer Reviews	4.7 4.7 out of 5 stars (9,252)
Efficiency	High Efficiency
Global Trade Identification Number	00046677476977
Incandescent Equivalent Wattage	60 Watts
Included Components	4 White A19 60W Smart LED Bulbs
Indoor Outdoor Usage	Indoor
Item Dimensions W x H	6.1W x 11.2H centimeters
Item Type Name	Smart Light A19
Item Weight	0.38 Kilograms
Light Color	White
Light Output Maximum	806 Lumens
Light Source Operating Life	25000 Hours
Light Source Type	LED.
Light Source Wattage	60 Watts
Light Type	LED
Manufacturer	Signify North America Corporation
Manufacturer Part Number	476977
Manufacturer Warranty Description	3 years.
Material Type	Synthetic Polymer (PMMA)
Model Name	Philips Hue A19
Model Number	476977
Number of Items	4
Package Quantity	1
Power Consumption	60 Watts
Power Source	Corded Electric
Shape	A-shape
Specific Uses For Product	Light
Specification Met	Energy Star
Style Name	White
UPC	046677476977
Unit Count	4 Count
Voltage	120 Volts
Wattage	60 watts
White Brightness	800 Lumens

Philips Hue Smart 60W A19 LED Bulb - Soft Warm White Light - 4 Pack - 800LM - E26 - Indoor - Control with Hue App - Works with Alexa, Google Assistant and Apple Homekit

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