Appearance-related

1. Q: Why is the Mi Home robotic vacuum cleaner not designed to be black or dark color?

A: Similar to other Mi Home products， the robotic vacuum cleaner uses white gray as the dominant hue that is more resistant to dirt. In the near future， other dark appearance color will be considered.

2. Q: Is it normal if the Mi Home robotic vacuum cleaner is found to be slightly scratched when unpacking?

A: The product may be slightly scratched due to in-transit bumps. It is guaranteed that， however， each set of machine delivered to our dear end user is new and unused.

3. Q: Is it normal if the machine body and top cover are scratched after the Mi Home robotic vacuum cleaner is used for a certain period of time?

A: As your machine will inevitably be slightly scratched and impacted during use， it is subject to normal trace of use that will not present an impact on product performance.

4. Q: What's the height of the Mi Home robotic vacuum cleaner?

A: The Mi Home robotic vacuum cleaner has the height of about 96 mm and may not be applicable to areas where furniture is 100 mm high or below.

5. Q: What's the diameter of the Mi Home robotic vacuum cleaner?

A: The Mi Home robotic vacuum cleaner has the diameter of 345 mm and may not be applicable to areas with width lower than 380 mm.

6. Q: What's the small brush in the right of the Mi Home robotic vacuum cleaner?

A: This is the side brush. The side brush， when running， is mainly used to sweep trash along the wall or barrier up to the bottom of the main brush， which is then suctioned into the dust bin.

7. Q: Is it normal that the loose portion in the front of the Mi Home robotic vacuum cleaner is movable?

A: The structural member in the front side that can be compressed is a bumper. This is an important sensor structure that helps the machine to detect a barrier in the range of 180 degrees in the front. A barrier in the front can be effectively detected with a slight physical impact.

8. Q: Why does a circular orange rotating portion protrude from the top of the Mi Home robotic vacuum cleaner?

A: The protrusion portion set on the top is the core component of the machine， i.e. LDS (laser distance sensor). It rotates constantly at 300 RPM to obtain topographic data around the machine itself. Outside the laser distance sensor is its protective cover.

9. Q: Why is there a wire mesh in the front of the Mi Home robotic vacuum cleaner?

A: This is where the ultrasonic sensor of the Mi Home robotic vacuum cleaner is located. It can detects an obstacle such as transparent glass that is invisible to the laser sensor in the front. In addition， it reduce the speed during movement to avoid high speed impact of the machine body on furniture.

10. Q: What's the small hole in the rear of the Mi Home robotic vacuum cleaner?

A: In the left of the machine tail is the speaker and in the right is the air outlet. The black thing visible inside the air outlet is the soundproof sponge that is used to reduce the noise in the air outlet.

11. Q: What's two metal bars in the rear of the Mi Home robotic vacuum cleaner?

A: Two metal bars on the tail of the machine body are the charging contact pieces， which contact the charging tab of the dock charger to realize the charging function.

12. Q: What's the black area on the dock charger of the Mi Home robotic vacuum cleaner?

A: This is the identification area of the dock charger. The machine can scan this identification area via the laser distance sensor and know that this location is the dock charger.

13. Q: What's the movable metal bar on the bottom of the dock charger of the Mi Home robotic vacuum cleaner?

A: This is the charge tab of the dock charger. It contacts the charging contact on the tail of the machine body to implement the charging function and is flexible to ensure better contact.

14. Q: What's the one removable cover on the bottom of the Mi Home robotic vacuum cleaner?

A: Under the cover is the USB debug interface of the Mi Home robotic vacuum cleaner that can power some products such as camera by using a OTA cable.

15. Q: What's the movable ball set on the bottom front of the Mi Home robotic vacuum cleaner?

A: This is the omni-directional wheel of the Mi Home robotic vacuum cleaner that can be rotated 360 degrees. Its outside is finished with flexible materials to effectively prevent scratch on a floor.

16. Q: What's the purpose of the transparent long adhesive tape on the bottom of the main brush cover of the Mi Home robotic vacuum cleaner?

A: The long adhesive tape on the bottom of the main brush cover is the sealing strip. When the machine runs， the sealing strip， together with the floor， forms a stable and closed high static pressure space to improve dust collection effect.

17. Q: What's the purpose of the 4 transparent windows on the bottom of the Mi Home robotic vacuum cleaner?

A: These are cliff sensors of the Mi Home robotic vacuum cleaner. The machine uses these 4 IR sensors to sense cliff regions to prevent falling.

18. Q: What's the purpose of a handful of black hair on the side & main brush covers of the Mi Home robotic vacuum cleaner?

A: This is the hair isolation bundle of the Mi Home robotic vacuum cleaner to prevent hair twining. It is a patented design and useful to prevent intrusion of hair into the bearing that can result in overheating or jamming.

19. Q: What's the purpose of the black rubber in two sides on the bottom of the main brush cover of the Mi Home robotic vacuum cleaner?

A: This is the wear pad of the main brush cover of the Mi Home robotic vacuum cleaner. The soft rubber pad will effectively avoid direct contact of the main brush cover with the floor that may result in scratch.

20. Q: Is it normal that the main brush structure on the bottom of the Mi Home robotic vacuum cleaner is free to move up and down?

A: Yes. To realize seamless cleaning， the floating main brush system used on the Mi Home robotic vacuum cleaner can automatically well fit the topography on a rugged ground to improve cleaning effectiveness.

21. Q: What's the purpose of the film set on the main brush of the Mi Home robotic vacuum cleaner?

A: This is the dust pick-up hose structure that can be smoothly connected to the floating main brush and dust bin and also effectively prevent intrusion of trash into the dust bin regardless of moving up or down.

22. Q: What's the purpose of the iron wires on the main brush cover of the Mi Home robotic vacuum cleaner?

A: These two stainless steel wires are mainly used to prevent cable winding or intrusion of large-volume trash.

23. Q: What's the purpose of the white label on the bottom screw of the Mi Home robotic vacuum cleaner?

A: This is a tamper label that should not be removed or damaged; otherwise， this will void your warranty.

24. Q: What's the purpose of the hole in the right of the Mi Home robotic vacuum cleaner?

A: This is the wall sensor of the machine. It is a high-precision distance sensor used to achieve high precision along-wall cleaning by precisely controlling the distance between the machine body and the wall.

25. Q: Why are two wheels of the Mi Home robotic vacuum cleaner free to move up and down?

A: Inside the wheels of the Mi Home robotic vacuum cleaner is a suspension system that can provide sufficient downward pressure for the machine body to help the machine to cross an obstacle.

26. Q: Why is the tread pattern of the Mi Home robotic vacuum cleaner designed to be serrated?

A: For an off-road tire of 70 mm in diameter and 17 mm in width， the serrated tread pattern design used in the Mi Home robotic vacuum cleaner can effectively improve the obstacle performance of the machine.

27. Q: Is it normal that the side brush and bottom cover of the Mi Home robotic vacuum cleaner are scratched?

A: During use， the side brush may be deformed when running into an obstacle or the bottom cover may be rubbed. This is normal trace of use and will not present an impact on product performance.

28. Q: Is the upper cover of the Mi Home robotic vacuum cleaner rugged， or is it easily broken?

A: Both the upper cover and its joint point of the Mi Home robotic vacuum cleaner are made of resilient materials. The upper cover will not be easily broken except for malicious damage.

29. Q: Is the top cover of the Mi Home robotic vacuum cleaner wear resisting?

A: The In-Mold Decoration by Roller (IMR) technology is used for the upper cover of the Mi Home robotic vacuum cleaner such that the surface is very smooth and flat and will not be scratched except for malicious damages such as use of a hard object or pointed object.

30. Q: How to do when the laser head protective cover of the Mi Home robotic vacuum cleaner is easy to be stained?

A: As this is the highest point of the machine， it is hard to avoid being scratched by the bottoms of some furniture， but this will not present an impact on the machine performance. If you still care， you can make some circular films by yourself to protect it.

31. Q: What's the black soft rubber ring set on the dust bin of the Mi Home robotic vacuum cleaner and what's the purpose?

A: The black soft rubber ring set on the dust bin is the seal ring formed by using the FIP process that features tight sealing and dust proof ability. The dust bin is closely mated with ducts in two sides with the help of the FIP seal ring.

32. Q: Why is only one side brush provided rather than two for the Mi Home robotic vacuum cleaner?

A: Firstly， the side brush of the robotic vacuum cleaner is mainly used to clean trash accumulated along a wall or at the root of an obstacle. The side brush is not a main cleaning structure when cleaning in other areas. For example， for non-wall cleaning， if the side brush always runs in high speed， it may make the trash fly about. The side brush can be dynamically regulated for the Mi Home robotic vacuum cleaner and the speed of the side brush will be reduced for non-wall cleaning to prevent trash flying about. Secondly， for the Mi Home robotic vacuum cleaner， it is designed in such a way that only one side cleans against a wall or the root of an obstacle and the side brush is not required in the other side. Finally， if two side brushes are designed， when cables are twined， two side brushes running in reverse direction are more easily to be twined such that the machine can be easily twined. From the above， only one side brush is designed for the Mi Home robotic vacuum cleaner.

33. Q: Will the machine be affected by some deformation/damage of the packing box of the Mi Home robotic vacuum cleaner?

A: The outer container may be deformed or damaged due to in-transit squeezing or vibration. Inner packing boxes and liners of the Mi Home robotic vacuum cleaner have been subject to strict drop and vibration tests and will provide good protection over the machine and ensure the machine inside will not be affected in any manner. Please be assured to unpack and use the machine.

34. Q: What's the purpose of the white net in the front of the strainer and can it be torn off?

A: The white net in the front of the strainer is nylon net that can block some large trash before the strainer to ensure that the strainer will not be blocked in short time that will result in filtration and suction failure. Tearing the nylon net off will make the strainer easily be blocked and be subject to physical damage from hard objects among trash. Please do not tear it off.

Use-related

1. Q: What's the best location to set the dock charger of the Mi Home robotic vacuum cleaner?

A: The dock charger should be set in such a way that about 0.5 m in left and right each， 1 m or more in the front are reserved， with its backside against the wall. It is generally recommended to set the dock charger in your living room that is generally spacious. Do not set the dock charger in a confined and congested place.

2. Q: Is a bumper strip required for the Mi Home robotic vacuum cleaner?

A: The Mi Home robotic vacuum cleaner is provided with a laser distance sensor and a ultrasonic sensor， both of which will reduce the speed in two stages. In addition， as impact is very slight at home， an additional bumper strip is not required. At the same time， if the ultrasonic sensor or wall sensor is blocked by your purchased bumper strip， the machine may not work normally.

3. Q: Is the Mi Home robotic vacuum cleaner suitable for solid wood/composite/archaized/tile floor?

A: The Mi Home robotic vacuum cleaner works well on all these floors and will surely not scratch them.

4. Q: How to do when feel the Mi Home robotic vacuum cleaner is too noisy?

A: As a product that truly helps you to clean your home thoroughly， the Mi Home robotic vacuum cleaner is normal to makes some operating noises. You can download Mi Home APP， connect it to your machine and then select the Silent mode to reduce noise， or start the machine when there's no one at home.

5. Q: Can the Mi Home robotic vacuum cleaner clean effectively?

A: The floating main brush structure of the Mi Home robotic vacuum cleaner is capable of fitting closely onto the floor to take trash into the dust bin; the high power fan provides high negative pressure to collect dust; the self-regulating side brush is capable of cleaning trash along the wall and in front of furniture; the path programming navigation algorithm allows the machine to cover all areas to clean; the combination of the features above ensures good cleaning effectiveness of the Mi Home robotic vacuum cleaner.

6. Q: Is mopping possible for the Mi Home robotic vacuum cleaner?

A: The mopping feature is not provided for the Mi Home robotic vacuum cleaner. There are some problems with respect to the mopping feature offered in other commercially available products. For example， poor passing ability and easy to get stuck in a ground mat or carpet; slipping due to dampened wheels; secondary contamination of mopping cloth; or even risk of failure due to work in a humid environment for a prolonged period of time. Therefore， the mopping feature is not provided for the Mi Home robotic vacuum cleaner. In case that the floor is clean， you can significantly reduce the cleaning frequency and it is easy to clean your house.

7. Q: How long will the Mi Home robotic vacuum cleaner take to clean my home?

A: It depends on operating time， room size， furniture arrangement， etc. In generally， it takes not more than 60 minutes to clean a 100 sq.m. room， and may be shorter if furniture is well arranged and there is little trash.

8. Q: Is Mi Home robotic vacuum cleaner suitable for overseas markets?

A: The power supply of the Mi Home robotic vacuum cleaner works well in the range of 100-240V/50-60HZ. However， overseas time zone is not supported and thus timer and "Do Not Disturb (DND)" may not be available.

9. Q: Is timer cleaning supported for the Mi Home robotic vacuum cleaner? How to set it?

A: Yes. Please download Mi Home APP and connect it to your machine. On the Setting option， you can add timer operation. After setting， the set timer cleaning will not be affected regardless of whether the machine is connected to Wi-Fi.

10. Q: Is the Mi Home robotic vacuum cleaner suitable for cleaning a carpet?

A: The Mi Home robotic vacuum cleaner works well on undercoat or suede carpets， but may not be suitable for some shag carpets or dark carpets because shag carpets may block the cliff sensor on the bottom of the machine， thereby making the machine regard it as a cliff that it should avoid. This is also true for some dark carpets that may have good light absorption ability.

11. Q: How to do when the Mi Home robotic vacuum cleaner frequently gets stuck in a balcony?

A: In case that the machine gets stuck in a balcony due to a small step， it is recommended to buy a dedicated virtual wall from the Mi mall to prevent getting stuck.

12. Q: How to do when the Mi Home robotic vacuum cleaner frequently gets stuck in the same place and reports an error?

A: Please check whether this place has the width or height basically the same as that of the machine. If so， it is recommended to buy a dedicated virtual wall from the Mi mall to prevent the machine entering this area.

13. Q: How to do when the Mi Home robotic vacuum cleaner always travels with a trash bin or a slipper?

A: Please collect other things on the floor before the machine works， to prevent these objects being pushed or pulled during operation.

14. Q: How to move the Mi Home robotic vacuum cleaner when it is working?

A: You can pause the machine midway and make it move in a small range. However， for a long movement distance， the machine may restart cleaning due to path programming failure.

15. Q: Can the Mi Home robotic vacuum cleaner work normally in a completely black environment?

A: Of course. All sensors attached on the machine body can work well in a completely black environment.

16. Q: Are 5GHz Wi-Fi or 802.1x verification mode supported for the Mi Home robotic vacuum cleaner?

A: Only 2.4GHz Wi-Fi is supported for the Mi Home robotic vacuum cleaner; ways of encryption requiring input of user name like 802.1x are not supported.

17. Q: How to do when the Mi Home robotic vacuum cleaner draws water?

A: Please remove the dust bin and main brush of the machine， use dry cloth to wipe water off and then dry the machine in a well ventilated place. Remove the strainer on the dust bin and flush the dust bin with tap water. Shake off water and dirt remaining on the strainer. Do not flush them with water again. It should be noted that the strainer should be completely dried and reinstalled; If the strainer is frequently blocked， please replace the strainer.

18. Q: Can the Mi Home robotic vacuum cleaner automatically empty the trash?

A: No. Please regularly manually clean the dust bin.

19. Q: Will your private information be public?

A: No. All data is stored in your Mi Home robotic vacuum cleaner. User map or other data will surely not be uploaded to the server. If you check the Customer Experience Improvement Program， only operation logs not containing sensitive information will be uploaded to the server to help us further improve our products.

20. Q: Is there a potential risk of electric shock when touching the dock charger of the Mi Home robotic vacuum cleaner?

A: No. Firstly， the dock charger outputs no current except when the machine is seated thereon; secondly， the dock charger has the output voltage of DC 20V which is far less than 36 V， the safe voltage for human body; finally， please be assured that the dock charger is provided with short circuit and current leakage protection features such that it can be automatically powered off in abnormal situations.

21. Q: What's the flashing red light when seeing the laser distance sensor (LDS) with naked eyes， and is it harmful to my eyes?

A: The red light is the ranging laser emitted from the LDS and the Mi Home robotic vacuum cleaner is certified in accordance with IEC 60825-1:2014 laser safety level Class 1. Please be assured that the emitted laser power dissipation is too low to be harmful to children or pets.

22. Q: Why does the robotic vacuum cleaner neglect some locations (for example， the 2 mm balcony with black floor is neglected)?

A: 1. Dark floors or dark carpets absorb light such that the machine may regard them as cliff which it should avoid; thus， these areas may be neglected

2. If there is dust on the cliff sensor， the cliff sensor may be wrongly triggered for non-dark floors. Please use soft & dry cloth to carefully clean the 4 cliff sensors on the bottom of the machine and then try again

23. Q: What is the sound level of the robotic vacuum cleaner?

A: When measuring at 1 m away， the sound level is between about 60 and 66 dB. It may have a slight difference depending on machine model.

24. Q: How long will the robotic vacuum cleaner take to charge?

A: Charge:

About 180 minutes for 0->100%

About 100 minutes for 20->80%

25. Q: Will tire's trace be left on the floor behind the robotic vacuum cleaner

A: The tires of the Mi Home robotic vacuum cleaner are made of flexible materials and on the bottom of the main brush is a cushion rubber; in addition， the face of the omni-directional wheel is also made of flexible materials. The machine has the total weight of 3.8kg and thus will not scratch the floor in normal use condition.

27. Q: Why can't the Mi Home robotic vacuum cleaner cross a curtain or bed sheet?

A: The laser distance sensor of the Mi Home robotic vacuum cleaner will identify a curtain or bed sheet as an inaccessible area and thus will not try to cross it.

28. Q: Can the Mi Home robotic vacuum cleaner memorize a map and how to clear the memory?

A: In a cleaning process， the Mi Home robotic vacuum cleaner will memorize a map， and return to the dock charger if the battery capacity is low and then continue working after charging. The map will be cleared at the end of cleaning， without the need of manual intervention.

29. Q: How to do when not want to continue cleaning or would like to restart cleaning?

A: Follow the operations below to end and restart cleaning: 1. pick the machine up and put it onto the dock charger， and start cleaning after you are alerted with the message that the machine is charging. 2. press the Recharge key to return the machine to the