Since amps x volts watts then watts volts amps.
How many volts does a garage door opener use.
In many other countries you will find 220v at 50hz.
Door from a dead stop.
So how much energy does my garage door opener burn when on standby.
The wired controller and sensors use low voltage wiring usually 24v to connect to the motor unit.
When several different models were tested the annual energy use varied anywhere from 15 8 kwh to 127 0 kwh or 2 to 16 per year.
Most garage door openers use from 350 to 600 watts with the average at about 500 watts.
The door will close only when holding down the button the voltage at the operator unit at the sensor wire connectors with the wires removed is about 1 1 2 volts.
No led lights on either sensor.
Usually 12 volts dc so your 13 volt reading is.
Old openers using ac motors probably have issues.
In some rare countries like japan you ll find 50hz in some locations and 60hz in others.
Like everything else this answer is heavily dependent on the make and model.
A garage door opener has a radio receiver garage lights and a motor to lift the garage door.
At 500 watts the power needed is just over 4 amps.
The voltage to the sensors is usually transformed at the main opener to low voltage probably dc but maybe ac.
Uses less than a watt while standing by waiting for the signal to open.
So 500 watts 120 volts 4 17 amps.
Here in the usa all residential garage door openers use 120v and 60hz.
Garage door opener wiring.
Garage door openers use safety reversing sensors to prevent the door from closing if a child pet or any object is under the door.
Garage door opener sensors.
The door can be heavy but usually uses counterweights or springs so that the motor isn t lifting a 300 lbs.