User manual and frequently asked questions PREMISS
Simplicity meets convenience in a beautiful design
With Tefal Premiss, convenience and simplicity combine in a digital bathroom scale that makes weighing yourself easy! Its slim design in tempered glass offers outstanding comfort and efficiency, from a generous body weight scale platform with an easy-to-read screen to a high capacity of up to 150 kg and automatic on and off functions.
To be fully satisfied with this appliance, measuring and weighing must always be conducted under the same conditions: • Always weigh yourself in bare feet. Your feet must be dry and properly positioned on the electrodes. Beware that if your feet have too much hard skin the measurement may be affected. • preferably once a week first thing in the morning, • 1/4 of an hour after waking up, so that the water in your body is distributed in the lower limbs. It is also important to ensure that there is no contact between the legs (thighs, knees, calves) or between the feet. If necessary, slip a sheet of paper between your legs.
Always keep your scale flat and do not place any objects on the platter. If you will not be using the scale for a long time, remove the batteries.
If the scale is stored vertically with one or more feet in the air or if objects are left on the scale, the first measurement will be incorrect. You may see an "ERR" message and a long beep at the end of the weighing operation. You will need to weigh yourself again.
We recommend always using new alkaline batteries (LR03 batteries), and never using saline batteries (R03 batteries) or rechargeable batteries (HR03 batteries). When changing the batteries, always replace all batteries with new alkaline batteries. This does not apply to scales using CR2032 button batteries or lithium batteries.
It is normal for the "8888" message to be displayed when batteries are inserted. The product is in the initialisation phase. Place it on a flat surface and wait for the message to clear. Moving or stepping on it while “8888” is displayed will restart initialisation. Initialisation can take from 5 to 30 seconds.
The virtual keyboard is only activated once weighing is complete. Here are the rules to follow: • Step off the product once weighing is complete, • The product must remain on the ground when tapping the keys, • Only tap the keys with one finger, • Only use a finger to tap the keys (no objects).
During the bathroom scale manufacturing calibration some variations could appeared from one scale to another. Some differences coming from these variations could appear if you compare your weight on two different bathroom scales.
Our scales use bioelectrical impedance, also known as bio-impedance.
A sinusoidal current of low intensity is sent in your body, this current easily crosses the tissues rich in water (lean mass: muscle, skin...), on the contrary, it meets more resistance at the level of the tissues poor in water (fat mass).
The resistance thus obtained, coupled with equations taking into account your profile, allows us to calculate your lean mass.
The fat mass is obtained by subtracting the lean mass from your total weight.