Xiaomi MI S400 - User Manual

Questions and Answers

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afoxAug 8, 2025
Why is the weighing deviation significant on my Xiaomi MI S400 Scales?
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  stevenhumphreyAug 8, 2025
  Significant weighing deviation on your Xiaomi Scales can occur due to several reasons: * Foreign objects or obstructions are present at the scale's feet or edges. * The scale isn't placed on a hard, flat surface. In this case, remove any obstructions, ensure the scale rests on a hard, flat surface, and gently press the four corners to stabilize it before measuring again. * You stepped on the scale before the display showed '0.0 kg'. To fix this, wake up the scale and only measure after '0.0 kg' is displayed. If there's a value showing, wait for it to turn off, then wake the scale and wait for '0.0 kg'.
L
Leslie WillisAug 15, 2025
What to do if Xiaomi MI S400 Scales display '----'?
- K
  Kyle BrownAug 15, 2025
  If your Xiaomi Scales display '----', it could be due to several reasons: * The scale hasn't been properly bound. Ensure the scale is correctly bound and connected, then troubleshoot using the app's instructions. * You are measuring without stepping on the scale barefoot. Step barefoot on the scale and measure again. * The skin on the soles of your feet is too dry, wet, or scaly, or the scale's electrodes are not clean. Clean both your feet and the electrodes with a slightly damp towel before measuring. * Your feet moved or weren't in contact with the electrodes during measurement. Keep your soles and heels in close contact with the electrodes as much as possible and remain still during measurement.
D
Dawn BrownAug 22, 2025
Why is the body fat measurement deviation significant on my Xiaomi MI S400 Scales?
- R
  Rebecca McclureAug 22, 2025
  Significant deviation in body fat measurement on your Xiaomi Scales can occur due to: * Dry weather or overly dry or wet skin on the soles of your feet. Clean your feet and the scale's electrodes with a slightly damp towel before measuring again. * Feet not fully contacting the electrodes during measurement. Ensure you step barefoot on the scale, keeping your feet in full contact with all four electrodes, and keep your inner thighs, legs, or feet apart. * Measurement taken in an abnormal physical state or after strenuous exercise. Measure again after your body achieves a stable physical state.
A
andrewstroyAug 30, 2025
How to fix Xiaomi MI S400 that won't turn on?
- T
  thomasrobertAug 30, 2025
  If your Xiaomi Scales won't turn on, it's likely due to a low or insufficient battery level. Replace the batteries and try again.

Summary

Safety Instructions

Warnings and Restrictions

Safety warnings and restrictions for using the body composition scale to avoid hazards and interference.

Special User Groups

Identifies user groups for whom the scale may not accurately measure body composition data.

Product Overview

Display Descriptions

Icon Meanings

Explains the meaning of specific icons shown on the scale's screen.

Scale Weighing Modes

How to Use

Installing the Batteries

Step-by-step instructions for inserting batteries into the scale.

Connecting to Mi Home App

Instructions for pairing the scale with the Mi Home/Xiaomi Home mobile application.

Measuring Weight

Procedure for accurately measuring body weight and composition data using the scale.

Precautions

Measurement Postures and Precautions

Guidance on correct postures and essential precautions for accurate measurements.

Battery Safety Warnings

Critical safety warnings concerning battery usage, handling, and disposal.

Care & Maintenance

Daily Maintenance and Storage

Procedures for routine cleaning, battery care, and appropriate storage of the scale.

Troubleshooting

Specifications

Regulatory Compliance

Information regarding the scale's compliance with EU directives and WEEE regulations.

Xiaomi MI S400 Specifications

General

Maximum weight	150 kg
Body Mass Index (BMI) measurement	Yes
Body fat analysis	Yes
Body water percentage	Yes
Bone mass analysis	Yes
Metabolic Rate (BMR) measurement	Yes
Muscle mass analysis	Yes
Visceral fat analysis	Yes
Material	Tempered glass
Weight units	kg
Connectivity	Bluetooth