I use Mi WiFi Range Extender AC1200 (on AP mode), which consumes 0.3 A (the label only list the ampere instead of watt). I live on 220V AC country, so:
- 220V * 0.3A = 66W
- google "how many hour in a month" = 730 hours
- 66 W / 1000 W * 730 hours = 48.18 kWh / month
I am a bit skeptical about the power that this router use, should be just using around 7W instead of 66W, I am thinking of buying a power meter to get the real power usage. and will change my router if this router really consumes too much electricity
That sounds like way too much. It's more likely it makes use of DC power at 5V or 12V: the fact it has an integrated adapter from AC to DC only means it's harder to figure this out.
A first AC/DC adapter I grabbed has an input of 0.1A at 230V and output of 0.5A at 10V. If your device has got a similar ratio (there is nothing to say it does, though :)), you are looking at 3A at 5V or 15W max.
Agree, listing only 0.1 A without saying at what voltage is is not informative. Recently bought a power meter and it says it actually only consumes 2.4W. I posted my correction on the replies above
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I use Mi WiFi Range Extender AC1200 (on AP mode), which consumes 0.3 A (the label only list the ampere instead of watt). I live on 220V AC country, so:
- 220V * 0.3A = 66W
- google "how many hour in a month" = 730 hours
- 66 W / 1000 W * 730 hours = 48.18 kWh / month
I am a bit skeptical about the power that this router use, should be just using around 7W instead of 66W, I am thinking of buying a power meter to get the real power usage. and will change my router if this router really consumes too much electricity
That sounds like way too much. It's more likely it makes use of DC power at 5V or 12V: the fact it has an integrated adapter from AC to DC only means it's harder to figure this out.
A first AC/DC adapter I grabbed has an input of 0.1A at 230V and output of 0.5A at 10V. If your device has got a similar ratio (there is nothing to say it does, though :)), you are looking at 3A at 5V or 15W max.
Agree, listing only 0.1 A without saying at what voltage is is not informative. Recently bought a power meter and it says it actually only consumes 2.4W. I posted my correction on the replies above
Here's my correction. My power meter has just arrived, it says my wifi router only consume 3.0 W at start and then drops to 2.4 W, so:
- google "how many hour in a month" = 730 hours
- 2.4 W / 1000 W * 730 hours = 1.75 kWh / month