RoidMi Car Air Purifier - Air purifier Xiaomi - Free user manual and instructions

Brand	Xiaomi
Model	RoidMi Car Air Purifier
Product Type	Car Air Purifier
Dimensions	170 × 170 × 50 mm
Weight	300 g
Power Source	12V DC (cigarette lighter socket)
Power Consumption	≤ 5 W
Filtration System	HEPA + Activated Carbon + Pre-filter
CADR (Clean Air Delivery Rate)	≥ 15 m³/h
Ionizer	Negative Ion Generator
Noise Level	≤ 45 dB (low speed)
Fan Speeds	3 speeds (Low/Medium/High)
Coverage Area	Up to 3 m³ (car cabin)
Filter Replacement	Every 3–6 months (depending on usage)
Maintenance	Clean pre-filter monthly; replace filter as needed
Safety Features	Overheat protection; auto shut-off when power disconnected
Installation	Plug and play; attach to seat headrest or dashboard
Compatible Vehicles	All 12V vehicles (cars, trucks, SUVs)
Spare Parts Availability	Replacement filter packs sold separately
Warranty	1 year (limited)

Frequently Asked Questions - RoidMi Car Air Purifier Xiaomi

How do I install the Xiaomi RoidMi Car Air Purifier?

Simply plug the purifier into your car's 12V cigarette lighter socket. You can attach it to the headrest of a seat or place it on the dashboard using the included mounting strap or bracket.

How often should I replace the filter?

The filter should be replaced every 3–6 months depending on air quality and usage. The purifier may have a filter replacement indicator that lights up when it's time to change.

Can this purifier remove cigarette smoke and odors?

Yes, the combination of a HEPA filter and activated carbon layer effectively captures smoke particles, odors, and volatile organic compounds (VOCs).

What is the noise level of the purifier?

The noise level ranges from ≤ 30 dB on low speed to ≤ 45 dB on high speed, which is quiet enough for normal driving.

Does the purifier consume a lot of power?

No, the maximum power consumption is ≤ 5 watts, so it has a minimal impact on your car battery.

Will it work with any car model?

It works with any vehicle that has a standard 12V cigarette lighter socket, including cars, trucks, and SUVs.

How do I clean the purifier?

Turn off and unplug the purifier. Use a soft, dry cloth to wipe the exterior. The pre-filter can be gently vacuumed or rinsed with water and dried completely before reuse.

Does it help with allergies?

Yes, the HEPA filter captures 99.97% of airborne particles such as pollen, dust mites, and pet dander, which can help reduce allergy symptoms.

What is the warranty period?

The Xiaomi RoidMi Car Air Purifier comes with a 1-year limited warranty against manufacturing defects.

Can I buy replacement filters?

Yes, replacement filter packs are available from Xiaomi or authorized resellers. Check the model number to ensure compatibility.

USER MANUAL RoidMi Car Air Purifier Xiaomi

Roidmi Car Air Purifier

Cautions

1. Open and close the device according to the sign « 🔊 ».
2. Before using the device, remove a filter unit from plastic packaging.
3. To use a flavor, add a few drops of flavor to the hole of a special unit.

* For safe and correct installation of a filter unit for flavor, please carefully read the instructions. * Used model series KJ102 Car Air Purifier 2015-01.

Overview

Introduction

Thank you for choosing Roidmi Car Air Purifier. Now in your car is pleasant and clean air.

You may wonder about the existence of hazardous and polluting substances in the air of your car. But gradually it harms your health.

We all know that the environment in which we live is pretty dirty. In this case, we decided to pay attention to air pollution in your car.

With the constant increasing of number of vehicles, more serious air pollution problem in the car is becoming. In a closed small space of vehicle is concentrated a large number of harmful bacteria, viruses, unpleasant odor of cigarettes, toxic gases (such as formaldehyde, gas, etc.) and many other substances.

All of this adversely affects the health of the driver. When driving a vehicle, it may feel dizziness, fatigue, nausea, may cough, difficulty in concentration and many other serious problems, that may even lead to the accident. This means that good and clean air in the car is very important for our health.

We hope that during your trips with family, or visits to relatives and friends, Roidmi Car Air Purifier creates a favorable atmosphere for your health.

Safety Measures

1. Before using the device, read the instructions carefully and store it properly for future use.
2. Do not place the device in the location of airbags to avoid an accident.
3. Avoid direct sunlight on the device, as it can lead to discoloration, deformation, or breakage of the air filter.
4. Do not disassemble, repair, or remodel the unit by yourself. Unauthorized disassembly and repair may cause malfunction or create a hazardous situation. Unauthorized reconstruction may cause fire or damage to the unit.
5. Do not connect an adapter to a cigarette lighter device with wet hands, as this could cause a short circuit.
6. This device is only suitable for car batteries DC12V. The use of DC24V batteries (public transport vehicles) is prohibited. If the nominal input voltage is exceeded, there is a likelihood of fire or damage to the unit.
7. Do not bend, pull, or twist the cord to avoid damaging it. If a cable is damaged, it can cause fire, damage to your phone, or damage to the electrical system of a vehicle.
8. Before replacing a filter, cleaning, or moving the device, turn off the power and remove the adapter from the cigarette lighter.
9. Insert the plug adapter into the cigarette lighter to the limit (if you do not insert the power adapter into the cigarette lighter to the limit, it may increase the temperature of the device, cause deformation of the cigarette lighter, and can cause fire).
10. Do not place the device near heat sources such as heaters. Fire and heat can cause discoloration or deformation of the unit.
11. Never insert things into the output air holes, as it can cause problems with the product.
12. When using insecticides, stop using the device to avoid accumulation of air pollutants in the cleaner.
13. When the air filter and humidifier work simultaneously, avoid falling into the device excessive amounts of water vapor, as it could cause a short circuit and malfunction.
14. Do not block the air supply and air outlet vents, as this will reduce the efficiency and capacity of clean air (making it difficult to completely clear the air in the vehicle) and can cause device failure.
15. Do not direct the air supply and air outlet holes towards drinking water, cigarette ash, metal objects, or flammable substances. If water, foreign substances, or objects fall into the unit, you must remove the power supply from the cigarette lighter and carry out preventive maintenance at an appropriate service center (if you continue to use the device, there is a risk of short circuit, failure, or damage to the vehicle's electrical circuit).
16. Do not use gasoline, thinners, or spray insecticides to clean the device, as these substances can cause a short circuit, fire, or promote cracking of the outer shell.
17. If the device is not used for a long time, remove the adapter from the cigarette lighter. Deterioration of the insulation creates the risk of leakage, electric shock, or fire.
18. When removing the power supply from the cigarette lighter, do not use excessive force or pull the cable, as this may cause damage to the power cable.
19. Do not make any modifications to the device. If you have any questions, contact a qualified service center. Disassembly or repair of the device by unauthorized persons may subsequently cause fire.
20. Children are forbidden to play with the formaldehyde protection filter to prevent poisoning and other dangerous situations.
21. When cleaning the external air filter housing, do not use chemical cleaners to avoid damage.
22. If the device's adapter is broken, please contact the service center or customer services to purchase a new adapter.

Accessories

1. Air output holes;
2. Power button;
3. Top housing;
4. Odorant block;
5. Formaldehyde filter;
6. Dust filter;
7. Bottom housing (air input holes);
8. Device base;
9. Power adapter.

About accessories

Formaldehyde filter (KJ102B-1/KJ102B-3)

Compared with traditional filters, the box is made of plastic, offering better aerodynamic performance. It has low bulk density, a large surface area, higher absorption efficiency, low resistance coefficient, and very high performance in formaldehyde adsorption.

Dust filter (KJ102B-3)

The dust filter not only removes PM2.5 dust particles from the air but is also highly effective at adsorbing PM0.3 dust particles.

Note: If not in use, turn off the power supply from a cigarette lighter to save electricity. Plug a power adapter into a wall outlet.

Functions

1. On/Off

This device has three modes: off mode, low speed mode, and high speed mode. When turned off, the device switches off from the initial mode. There are many different models of cars. Some models keep the cigarette lighter energized even after switching off the ignition. Therefore, before closing the car doors, be sure to disconnect the power adapter from the cigarette lighter to avoid an accident.

2. Speed

This device has two speeds (low and high), which the user selects manually. Click the button to turn on low speed operation. Press the button again to switch to high speed mode. If you press the button again, the device will switch off from the current mode. At high speed, the device clears the air quickly and efficiently.

3. Change a filter

In normal operation, the device's blue light is constantly lit. A red indicator reminds the user that it is necessary to replace the filter. After changing the filter, press and hold the power button for 3 seconds to resume the indicator display. If you don't press the power button, the red indicator remains lit, but you cannot determine the timepoint for filter replacement. Late replacement of the filter may cause secondary air pollution.

Usage

Before first use of the device, remove the filter unit from its plastic packaging.

1. To remove the air cleaner's upper body, position the device correctly until the indicator arrow points to the open lock icon «🔍».

1. Remove the filter block from the plastic package (fig 2).

1. Installation of the filter block and the flavoring block. Open the bottom air cleaner housing, insert a filter for protection against formaldehyde or a filter for dust protection. Insert the flavoring block into the chosen filter (fig 3).

1. Installing the top housing.

Align the top and bottom casings of the device so that the indicator arrow «▼» (on the top casing) aligns with the opened lock icon on the bottom casing. Turn the device left until the arrow icon «▼» aligns with the closed lock icon «💡» (fig 4).

1. Connect the power cable.

After assembling the device, connect one end of the power cable with the small plug to the appropriate connector on the air filter, and the other end to a car lighter. You can press the power button and start using the device (fig 5).

1. Placing the Roidmi Car Air Purifier.

Place the Roidmi Car Air Purifier in a location designed to accommodate a glass of water. Do not place the device in front of the windscreen to avoid obstructing your view of the road (fig 6).

Model	Casing	Formaldehyde filter	Dust filter	Flavor block	Power cable	Manual	Certificate	Warranty
KJ102B-1	+	+	+	+	+	+	+	+
KJ102B-3	+	+	+	+	+	+	+	+

WARNING:

1. This device does not eliminate all harmful substances in the air. (For example, carbon monoxide, contained in tobacco smoke). When using the unit indoors or in the car, always open the windows for ventilation.
2. Be sure to use the power adapter that is included as standard. Do not use third-party devices.

Cleaning and maintenance

Cautions for maintenance

• Before performing any action with the device, make sure that the power supply is disconnected from the cigarette lighter.
• To clean the device, use a soft cloth or cotton swabs. Using a hard brush or other such things can scratch or damage the unit.
• If you use a detergent, be sure to choose a neutral detergent, because others can damage or ruin the device.

Regularly maintain the enclosure, air supply openings, and air exhaust openings.

• To wipe dust from the enclosure, use a soft cloth.
• To clean dust out of the air supply and air output holes, you can use a vacuum cleaner or soft tissue.

Reminder for filter replacement

1. If you use a dust filter or formaldehyde filter and the indicator shows a red light, change the filter.
2. If the dust filter or formaldehyde filter is used in turn, determine the filter replacement based on their actual usage conditions.

Replacing a fuse

First, check if the power adapter is plugged into the cigarette lighter to the limit. Open the plug adapter and ensure its integrity and safety. If a fuse is blown or broken, replace it. To remove the plug end of the power adapter, put it aside.

Insert a new fuse, then assemble the power adapter back to its starting position.

Note: If the fuse is blown, be sure to replace it with a glass fuse (refer to after-sales service). Do not use metal or other protective devices under any circumstances. Using the wrong fuse may increase the device's temperature, which could lead to burnout of the car's electrical circuit or even a fire.

New fuse

Electrical circuit

Specifications

Model: KJ102B-1 / KJ102B-3;

Power supply: DC12V car power;

Rated power: 3.6W;

Compatible with: Standard cars.

(FAQ)

Symptom of fault	Cause of a malfunction	Problem solving
The device does not turn on	Make sure a power supply is plugged into cigarette lighter to the limit.Ensure you have good contact between power adapter and cigarette lighter.	Check out a cigarette lighter.Plug a power adapter into cigarette lighter to the limit.
No air ventilation	Locking holes for air supply and air outlet.A filter not removed from a plastic package.	Remove any foreign objects from holes or contact an authorized sales representative.Remove a filter from plastic packaging.
Not cleared air	The device is installed in a place where there is no air ventilation or near some obstacles.Filter adsorbed too much dust or cigarette smoke.	Remove obstacles.Change a dust filter.
A hole for an air outlet has a strange smell	Many temporary sources of odors (many people are smoking at the same time, etc.).Filter for protection against formaldehyde adsorbed too much cigarette smoke or unpleasant odors.	Odors disappear while the device works some time.Change formaldehyde filter.

If the problem persists and the troubleshooting steps above do not help, contact an authorized sales representative immediately. Do not attempt to disassemble or repair the device yourself.

After-sales service

If the device malfunctions or has issues, please contact maintenance service.

When describing the problem, please provide your name, address, contact phone number, model name, and product details. Describe the issue clearly. We will do our best to assist you as quickly as possible.

Warranty

1. Warranty certificate: If you need a normal consultation or to perform preventive maintenance, please call maintenance to contact us. Sales receipt and warranty card store properly.
2. If, during a warranty period there was a problem with the device (except misuse of the product), and following all recommendations to solve the problem, a problem persists, call technical service to contact us.
3. If, after the expiration of a warranty period, there was a need to repair the unit, call maintenance to contact us.

Repair of device charged.

Environmental Protection

When disposing the device, please do not dispose of it with household waste. You must pass it to a special device recycling center for such products to avoid causing harm to the environment.

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