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STS
solarthon
3KW/3.3KW/3.5KW/5KW/5.5KW/8KW/10KW
2HP/4HP/5HP/6HP
>95%
Pure sine wave
MPPT
Wi-Fi
RS485
50Hz/60Hz
HYBRID SOLAR INVERTER 3KW/3.3KW/3.5KW/5KW/5.5KW/8KW/10KW
STS series is a new type of solar energy storage inverter that integrates solar energy storage, mains charging energy storage and AC sine wave output. Using DSP control and advanced control algorithm, it has the characteristics of fast response, high reliability and high industry standards. There are four charging modes to choose from: solar charging, mains priority, mains priority, mains + solar, inverter and mains output to meet different application needs.
The solar charging module adopts the latest optimized MPPT tracking technology, which can quickly track the maximum power point of the photovoltaic array in any environment, obtain the maximum energy of the solar panel in real time, and have a wide range of MPPT voltage. The AC and DC charging module adopts advanced control algorithm to realize full digital double closed-loop control of voltage and current, with high control accuracy and small size. The battery charging and protection are stable and reliable, the AC voltage input range is wide, and the input/output protection function is complete.
HYBRID SOLAR INVERTER 3KW/3.3KW/3.5KW/5KW/5.5KW/8KW/10KW
STS series is a new type of solar energy storage inverter that integrates solar energy storage, mains charging energy storage and AC sine wave output. Using DSP control and advanced control algorithm, it has the characteristics of fast response, high reliability and high industry standards. There are four charging modes to choose from: solar charging, mains priority, mains priority, mains + solar, inverter and mains output to meet different application needs.
The solar charging module adopts the latest optimized MPPT tracking technology, which can quickly track the maximum power point of the photovoltaic array in any environment, obtain the maximum energy of the solar panel in real time, and have a wide range of MPPT voltage. The AC and DC charging module adopts advanced control algorithm to realize full digital double closed-loop control of voltage and current, with high control accuracy and small size. The battery charging and protection are stable and reliable, the AC voltage input range is wide, and the input/output protection function is complete.
P/N | Product Description | Packing Size (CM) | G.W/CTN (KGS) | ||
L | W | H | |||
STS33248 | 3.3KW All-In-One Solar Charge Inverter Rated Output Power: 3300W Load Motor Capability: 2HP Rated Output Voltage: 230VAC, 50Hz/60Hz Inverter Output Efficiency: >92% Max. PV Input Voltage(Voc): 145VDC MPPT Tracking Voltage Range: 60V-115VDC PV Array Maximum Power: 3400W Max. Input Current: 40A Baterry Voltage: 48VDC AC Input Voltage: 170~280VAC, 50Hz/60Hz Max. AC Charge Current: 60A Max. PV Charge Current: 60A Product Size: 378x280x103mm Weight: 6.2kg Warranty: 3 Years | 44.00 | 35.00 | 17.50 | 7.20 |
STS35224 | 3.5KW All-In-One Solar Charge Inverter Rated Output Power: 3500W Load Motor Capability: 2HP Rated Output Voltage: 230VAC, 50Hz/60Hz Inverter Output Efficiency: >90% Max. PV Input Voltage(Voc): 500VDC MPPT Tracking Voltage Range: 120V-450VDC PV Array Maximum Power: 4000W Max. Input Current: 13A Baterry Voltage: 24VDC AC Input Voltage: 170~280VAC, 50Hz/60Hz Max. AC Charge Current: 80A Max. PV Charge Current: 80A Product Size: 378x280x103mm Weight: 7.4kg Warranty: 3 Years | 44.00 | 35.00 | 17.50 | 8.40 |
STS55248 | 5.5KW All-In-One Solar Charge Inverter Rated Output Power: 5500W Load Motor Capability: 4HP Rated Output Voltage: 230VAC, 50Hz/60Hz Inverter Output Efficiency: >90% Max. PV Input Voltage(Voc): 500VDC MPPT Tracking Voltage Range: 120V-450VDC PV Array Maximum Power: 6000W Max. Input Current: 22A Baterry Voltage: 48VDC AC Input Voltage: 170~280VAC, 50Hz/60Hz Max. AC Charge Current: 60A Max. PV Charge Current: 100A Product Size: 426x322x126mm Weight: 10.5kg Warranty: 3 Years | 48.60 | 40.80 | 20.10 | 11.60 |
STS55248B | 5.5KW All-In-One Solar Charge Inverter(Parallel Machine) Number Of Parallel Machines: 1~6 pcs Rated Output Power: 5500W Load Motor Capability: 4HP Rated Output Voltage: 230VAC, 50Hz/60Hz Inverter Output Efficiency: >92% Max. PV Input Voltage(Voc): 500VDC MPPT Tracking Voltage Range: 120V-450VDC PV Array Maximum Power: 6000W Max. Input Current: 22A Baterry Voltage: 48VDC AC Input Voltage: 170~280VAC, 50Hz/60Hz Max. AC Charge Current: 60A Max. PV Charge Current: 100A Product Size: 426x322x126mm Weight: 10.5kg Warranty: 3 years | 48.60 | 40.80 | 20.10 | 11.60 |
STS30224U | 3KW All-In-One Solar Charge Inverter(120VAC) Rated Output Power: 3000W Load Motor Capability: 2HP Rated Output Voltage: 120VAC, 50Hz/60Hz Inverter Output Efficiency: >91% Max. PV Input Voltage(Voc): 108VDC MPPT Tracking Voltage Range: 30V-85VDC PV Array Maximum Power: 1400W Max. PV Input Current: 40A Baterry Voltage: 24VDC AC Input Voltage: 90~140VAC, 50Hz/60Hz Max. AC Charge Current: 40A Max. PV Charge Current: 60A Product Size: 378x280x103mm Weight: 6.8kg Warranty: 3 years | 44.00 | 35.00 | 17.50 | 7.80 |
STS50248U | 5KW All-In-One Solar Charge Inverter(120VAC) Rated Output Power: 5000W Load Motor Capability: 4HP Rated Output Voltage: 120VAC, 50Hz/60Hz Inverter Output Efficiency: >90% Max. PV Input Voltage(Voc): 500VDC MPPT Tracking Voltage Range: 120V-450VDC PV Array Maximum Power: 5000W Max. Input Current: 18A Baterry Voltage: 48VDC AC Input Voltage: 90~140VAC, 50Hz/60Hz Max. AC Charge Current: 40A Max. PV Charge Current: 80A Product Size: 426x322x126mm Weight: 11.6kg Warranty: 3 years | 49.80 | 41.00 | 20.10 | 12.70 |
STSPI8KS | 8KW Hybrid Solar Inverter Rated Output Power: 8000W Load Motor Capability: 5HP Rated Output Voltage: 230VAC, 50Hz/60Hz Inverter Output Efficiency: 92% Max PV Input Voltage(Voc): 500VDC MPPT Tracking Voltage Range: 125V-425VDC Max. PV Input Current: 22/22A Max. PV Array Power: 5500W/5500W Baterry Voltage: 48VDC AC Input Voltage: 90~275VAC, 50Hz/60Hz Max. AC Charge Current: 100A Max. PV Charge Current: 180A Product Size: 620x445x130mm Weight: 27kg Warranty: 3 Years | 70.00 | 54.00 | 21.00 | 27.70 |
STSPI10KSP | 10KW Hybrid Solar Inverter (Parallel Machine) Number Of Parallel Machines: 1~6 pcs Rated Output Power: 10000W Load Motor Capability: 6HP Rated Output Voltage: 230VAC, 50Hz/60Hz Inverter Output Efficiency: 92% Max. PV Input Voltage(Voc): 500VDC MPPT Tracking Voltage Range: 125V-425VDC Max PV Input Current: 22/22A Max. PV Array Power: 5500W/5500W Baterry Voltage: 48VDC AC Input Voltage: 90~275VAC, 50Hz/60Hz Max AC Charge Current: 120A Max PV Charge Current: 200A Product Size:620*445*130mm Weight: 27kg Warranty: 3 Years | 70.00 | 54.00 | 21.00 | 27.70 |
STSPI8KU | 8KW Hybrid Solar Inverter (Split-Phase) Rated Output Power: 8000W Load Motor Capability: 5HP Rated Output Voltage: 120/240VAC, 50Hz/60Hz Inverter Output Efficiency: 92% Max PV Input Voltage(Voc): 500VDC MPPT Tracking Voltage Range: 125V-425VDC Max. PV Input Current: 22/22A Max. PV Array Power: 5500W/5500W Baterry Voltage: 48VDC AC Input Voltage: 90~140VAC, 50Hz/60Hz Max. AC Charge Current: 100A Max. PV Charge Current: 180A Product Size: 620x445x130mm Weight: 27kg Warranty: 3 Years | 78.50 | 56.50 | 23.00 | 27.70 |
STSPI10KU | 10KW Hybrid Solar Inverter (Split-Phase) Rated Output Power: 10000W Load Motor Capability: 6HP Rated Output Voltage: 120/240VAC, 50Hz/60Hz Inverter Output Efficiency: 92% Max PV Input Voltage(Voc): 500VDC MPPT Tracking Voltage Range: 125V-425VDC Max. PV Input Current: 22/22A Max. PV Array Power: 5500W/5500W Baterry Voltage: 48VDC AC Input Voltage: 90~140VAC, 50Hz/60Hz Max. AC Charge Current: 120A Max. PV Charge Current: 200A Product Size: 620x445x130mm Weight: 27kg Warranty: 3 Years | 78.50 | 56.50 | 23.00 | 27.70 |
STMSW09 | Energy Storage Inverter Data Miner Rated Valtage: 5V-12VDC Maximum Current: 0.8A(DC5V) Data Input Mode: RS485 Data Output Mode: Wi-Fi Operating Frequency: 2.412-2.484GHz Communication Distance: 100m(Open Environment) Data Upload Cycle: 5 Minute Operating Temperature: -30~85℃ Product Size: 70x27x137mm Net Weight: 0.066kg Warranty: 3 years | 10.00 | 5.00 | 20.00 | 0.09 |
The DC-AC inverter module based on all-digital intelligent design adopts advanced SPWM technology to output pure sine wave and convert DC into AC, which is suitable for AC loads such as household appliances, power tools, industrial equipment, electronic audio-visual, etc. The product adopts a segmented LCD display design, which displays the system operation data and status in real time. The comprehensive electronic protection function ensures the safety and stability of the whole system.
P/N | Product Description | Packing Size (CM) | G.W/CTN (KGS) | ||
L | W | H | |||
STS33248 | 3.3KW All-In-One Solar Charge Inverter Rated Output Power: 3300W Load Motor Capability: 2HP Rated Output Voltage: 230VAC, 50Hz/60Hz Inverter Output Efficiency: >92% Max. PV Input Voltage(Voc): 145VDC MPPT Tracking Voltage Range: 60V-115VDC PV Array Maximum Power: 3400W Max. Input Current: 40A Baterry Voltage: 48VDC AC Input Voltage: 170~280VAC, 50Hz/60Hz Max. AC Charge Current: 60A Max. PV Charge Current: 60A Product Size: 378x280x103mm Weight: 6.2kg Warranty: 3 Years | 44.00 | 35.00 | 17.50 | 7.20 |
STS35224 | 3.5KW All-In-One Solar Charge Inverter Rated Output Power: 3500W Load Motor Capability: 2HP Rated Output Voltage: 230VAC, 50Hz/60Hz Inverter Output Efficiency: >90% Max. PV Input Voltage(Voc): 500VDC MPPT Tracking Voltage Range: 120V-450VDC PV Array Maximum Power: 4000W Max. Input Current: 13A Baterry Voltage: 24VDC AC Input Voltage: 170~280VAC, 50Hz/60Hz Max. AC Charge Current: 80A Max. PV Charge Current: 80A Product Size: 378x280x103mm Weight: 7.4kg Warranty: 3 Years | 44.00 | 35.00 | 17.50 | 8.40 |
STS55248 | 5.5KW All-In-One Solar Charge Inverter Rated Output Power: 5500W Load Motor Capability: 4HP Rated Output Voltage: 230VAC, 50Hz/60Hz Inverter Output Efficiency: >90% Max. PV Input Voltage(Voc): 500VDC MPPT Tracking Voltage Range: 120V-450VDC PV Array Maximum Power: 6000W Max. Input Current: 22A Baterry Voltage: 48VDC AC Input Voltage: 170~280VAC, 50Hz/60Hz Max. AC Charge Current: 60A Max. PV Charge Current: 100A Product Size: 426x322x126mm Weight: 10.5kg Warranty: 3 Years | 48.60 | 40.80 | 20.10 | 11.60 |
STS55248B | 5.5KW All-In-One Solar Charge Inverter(Parallel Machine) Number Of Parallel Machines: 1~6 pcs Rated Output Power: 5500W Load Motor Capability: 4HP Rated Output Voltage: 230VAC, 50Hz/60Hz Inverter Output Efficiency: >92% Max. PV Input Voltage(Voc): 500VDC MPPT Tracking Voltage Range: 120V-450VDC PV Array Maximum Power: 6000W Max. Input Current: 22A Baterry Voltage: 48VDC AC Input Voltage: 170~280VAC, 50Hz/60Hz Max. AC Charge Current: 60A Max. PV Charge Current: 100A Product Size: 426x322x126mm Weight: 10.5kg Warranty: 3 years | 48.60 | 40.80 | 20.10 | 11.60 |
STS30224U | 3KW All-In-One Solar Charge Inverter(120VAC) Rated Output Power: 3000W Load Motor Capability: 2HP Rated Output Voltage: 120VAC, 50Hz/60Hz Inverter Output Efficiency: >91% Max. PV Input Voltage(Voc): 108VDC MPPT Tracking Voltage Range: 30V-85VDC PV Array Maximum Power: 1400W Max. PV Input Current: 40A Baterry Voltage: 24VDC AC Input Voltage: 90~140VAC, 50Hz/60Hz Max. AC Charge Current: 40A Max. PV Charge Current: 60A Product Size: 378x280x103mm Weight: 6.8kg Warranty: 3 years | 44.00 | 35.00 | 17.50 | 7.80 |
STS50248U | 5KW All-In-One Solar Charge Inverter(120VAC) Rated Output Power: 5000W Load Motor Capability: 4HP Rated Output Voltage: 120VAC, 50Hz/60Hz Inverter Output Efficiency: >90% Max. PV Input Voltage(Voc): 500VDC MPPT Tracking Voltage Range: 120V-450VDC PV Array Maximum Power: 5000W Max. Input Current: 18A Baterry Voltage: 48VDC AC Input Voltage: 90~140VAC, 50Hz/60Hz Max. AC Charge Current: 40A Max. PV Charge Current: 80A Product Size: 426x322x126mm Weight: 11.6kg Warranty: 3 years | 49.80 | 41.00 | 20.10 | 12.70 |
STSPI8KS | 8KW Hybrid Solar Inverter Rated Output Power: 8000W Load Motor Capability: 5HP Rated Output Voltage: 230VAC, 50Hz/60Hz Inverter Output Efficiency: 92% Max PV Input Voltage(Voc): 500VDC MPPT Tracking Voltage Range: 125V-425VDC Max. PV Input Current: 22/22A Max. PV Array Power: 5500W/5500W Baterry Voltage: 48VDC AC Input Voltage: 90~275VAC, 50Hz/60Hz Max. AC Charge Current: 100A Max. PV Charge Current: 180A Product Size: 620x445x130mm Weight: 27kg Warranty: 3 Years | 70.00 | 54.00 | 21.00 | 27.70 |
STSPI10KSP | 10KW Hybrid Solar Inverter (Parallel Machine) Number Of Parallel Machines: 1~6 pcs Rated Output Power: 10000W Load Motor Capability: 6HP Rated Output Voltage: 230VAC, 50Hz/60Hz Inverter Output Efficiency: 92% Max. PV Input Voltage(Voc): 500VDC MPPT Tracking Voltage Range: 125V-425VDC Max PV Input Current: 22/22A Max. PV Array Power: 5500W/5500W Baterry Voltage: 48VDC AC Input Voltage: 90~275VAC, 50Hz/60Hz Max AC Charge Current: 120A Max PV Charge Current: 200A Product Size:620*445*130mm Weight: 27kg Warranty: 3 Years | 70.00 | 54.00 | 21.00 | 27.70 |
STSPI8KU | 8KW Hybrid Solar Inverter (Split-Phase) Rated Output Power: 8000W Load Motor Capability: 5HP Rated Output Voltage: 120/240VAC, 50Hz/60Hz Inverter Output Efficiency: 92% Max PV Input Voltage(Voc): 500VDC MPPT Tracking Voltage Range: 125V-425VDC Max. PV Input Current: 22/22A Max. PV Array Power: 5500W/5500W Baterry Voltage: 48VDC AC Input Voltage: 90~140VAC, 50Hz/60Hz Max. AC Charge Current: 100A Max. PV Charge Current: 180A Product Size: 620x445x130mm Weight: 27kg Warranty: 3 Years | 78.50 | 56.50 | 23.00 | 27.70 |
STSPI10KU | 10KW Hybrid Solar Inverter (Split-Phase) Rated Output Power: 10000W Load Motor Capability: 6HP Rated Output Voltage: 120/240VAC, 50Hz/60Hz Inverter Output Efficiency: 92% Max PV Input Voltage(Voc): 500VDC MPPT Tracking Voltage Range: 125V-425VDC Max. PV Input Current: 22/22A Max. PV Array Power: 5500W/5500W Baterry Voltage: 48VDC AC Input Voltage: 90~140VAC, 50Hz/60Hz Max. AC Charge Current: 120A Max. PV Charge Current: 200A Product Size: 620x445x130mm Weight: 27kg Warranty: 3 Years | 78.50 | 56.50 | 23.00 | 27.70 |
STMSW09 | Energy Storage Inverter Data Miner Rated Valtage: 5V-12VDC Maximum Current: 0.8A(DC5V) Data Input Mode: RS485 Data Output Mode: Wi-Fi Operating Frequency: 2.412-2.484GHz Communication Distance: 100m(Open Environment) Data Upload Cycle: 5 Minute Operating Temperature: -30~85℃ Product Size: 70x27x137mm Net Weight: 0.066kg Warranty: 3 years | 10.00 | 5.00 | 20.00 | 0.09 |
The DC-AC inverter module based on all-digital intelligent design adopts advanced SPWM technology to output pure sine wave and convert DC into AC, which is suitable for AC loads such as household appliances, power tools, industrial equipment, electronic audio-visual, etc. The product adopts a segmented LCD display design, which displays the system operation data and status in real time. The comprehensive electronic protection function ensures the safety and stability of the whole system.
● Supports lead acid battery and li-ion battery connections.
● With a dual activation function when the li-ion battery is dormant; either mains/
photovoltaic power supply access can trigger the activation of the li-ion battery.
● Supports two solar inputs and simultaneous tracking of two solar maximum power
charging/carrying capacity functions.
● Dual MPPT with 99.9% efficiency and maximum 22A current in a single circuit,
perfectly adapted to high power modules.
● 4 charging modes are available: solar only, mains priority, solar priority, and mixed
mains/PV charging.
● With the time-slot charging and discharging setting function, you can set the time
period for cutting in/out of mains charging and switch the time period between battery
discharging and mains bypass power supply mode.
● With two output modes of utility bypass and inverter output, with uninterrupted power
supply function.
● LCD large screen dynamic diagram design, easy to understand system data and
operating status.
● 360° protection with complete short circuit protection, over current protection, over
under voltage protection, overload protection, backfill protection, etc.
● Supports lead acid battery and li-ion battery connections.
● With a dual activation function when the li-ion battery is dormant; either mains/
photovoltaic power supply access can trigger the activation of the li-ion battery.
● Supports two solar inputs and simultaneous tracking of two solar maximum power
charging/carrying capacity functions.
● Dual MPPT with 99.9% efficiency and maximum 22A current in a single circuit,
perfectly adapted to high power modules.
● 4 charging modes are available: solar only, mains priority, solar priority, and mixed
mains/PV charging.
● With the time-slot charging and discharging setting function, you can set the time
period for cutting in/out of mains charging and switch the time period between battery
discharging and mains bypass power supply mode.
● With two output modes of utility bypass and inverter output, with uninterrupted power
supply function.
● LCD large screen dynamic diagram design, easy to understand system data and
operating status.
● 360° protection with complete short circuit protection, over current protection, over
under voltage protection, overload protection, backfill protection, etc.
Supporting one-stop procurement, our product categories are complete; There is a specialized production line with guaranteed quality; Batch purchase supports OEM/ODM and provides professional installation guidance. Welcome to contact us!
Supporting one-stop procurement, our product categories are complete; There is a specialized production line with guaranteed quality; Batch purchase supports OEM/ODM and provides professional installation guidance. Welcome to contact us!
Are your inverters pure sine wave output?
Q: Yes, all our inverters are true pure sine wave.
A: What kind of output can you provide?
Q: Normally, we produce inverters with 110V, 115V, 120V, 220V, 230V, and 240V, 50/60Hz self-adaption. If you have special requirements, please let us know for engineer consulting.
A: What's the difference between low frequency and high frequency inverters?
Q: Low frequency inverters have various protections and a strong ability to adapt to the environment. They are more reliable and have voltage regulation.
A: What's the difference between pure sine wave inverters and modified sine wave inverters?
Q: Pure sine wave output inverters are just as good as the public power grid, if not better. They have a low repair rate, long lifespan, no harmonic pollution, and are environmentally friendly. They also protect appliances. On the other hand, modified sine wave output has a negative impact on appliances and cannot load inductive loads such as air conditioners and refrigerators. Certain motor control circuits do not work well with modified sine wave.
A: What appliances can your inverters load?
Q: Our inverters can be used with household, office, agricultural appliances, and other inductive loads such as refrigerators, air conditioners, water pumps, etc.
A: Can you print our company logo on inverters, nameplates, and packaging?
Q: Yes, we accept OEM orders.
A: How do I choose the right inverter?
Q: Simply tell us your requirements, and our sales team will recommend a suitable inverter for you.
A: How do I solve technical problems?
Q: We offer 24-hour after-service consultancy to make it easy for you to solve any technical problems.
A: Do I need a power inverter?
Q: Actually, no. A power inverter is not absolutely required for a solar energy system. However, if you don't use one, you will not have 220 or 230 volts AC and will have to rely solely on battery power. This might be acceptable in a small RV or cabin, but most people prefer to use normal AC appliances.
A: What's the difference between 12, 24, and 48 volt inverters?
Q: This refers to the input voltage from the battery bank. The main consideration is that at higher voltages, the current is less, allowing you to use smaller wires between your solar panel array and your battery bank. When deciding on a system voltage, the solar panels, inverter, and battery bank all need to use the same voltage.
A: What should I do if the product is broken?
Q: If any product is faulty, you can send us pictures or videos, and we will study them and provide the necessary spare parts of the PCB board for after-sale service.
For more information, please click here. Thank you!
Are your inverters pure sine wave output?
Q: Yes, all our inverters are true pure sine wave.
A: What kind of output can you provide?
Q: Normally, we produce inverters with 110V, 115V, 120V, 220V, 230V, and 240V, 50/60Hz self-adaption. If you have special requirements, please let us know for engineer consulting.
A: What's the difference between low frequency and high frequency inverters?
Q: Low frequency inverters have various protections and a strong ability to adapt to the environment. They are more reliable and have voltage regulation.
A: What's the difference between pure sine wave inverters and modified sine wave inverters?
Q: Pure sine wave output inverters are just as good as the public power grid, if not better. They have a low repair rate, long lifespan, no harmonic pollution, and are environmentally friendly. They also protect appliances. On the other hand, modified sine wave output has a negative impact on appliances and cannot load inductive loads such as air conditioners and refrigerators. Certain motor control circuits do not work well with modified sine wave.
A: What appliances can your inverters load?
Q: Our inverters can be used with household, office, agricultural appliances, and other inductive loads such as refrigerators, air conditioners, water pumps, etc.
A: Can you print our company logo on inverters, nameplates, and packaging?
Q: Yes, we accept OEM orders.
A: How do I choose the right inverter?
Q: Simply tell us your requirements, and our sales team will recommend a suitable inverter for you.
A: How do I solve technical problems?
Q: We offer 24-hour after-service consultancy to make it easy for you to solve any technical problems.
A: Do I need a power inverter?
Q: Actually, no. A power inverter is not absolutely required for a solar energy system. However, if you don't use one, you will not have 220 or 230 volts AC and will have to rely solely on battery power. This might be acceptable in a small RV or cabin, but most people prefer to use normal AC appliances.
A: What's the difference between 12, 24, and 48 volt inverters?
Q: This refers to the input voltage from the battery bank. The main consideration is that at higher voltages, the current is less, allowing you to use smaller wires between your solar panel array and your battery bank. When deciding on a system voltage, the solar panels, inverter, and battery bank all need to use the same voltage.
A: What should I do if the product is broken?
Q: If any product is faulty, you can send us pictures or videos, and we will study them and provide the necessary spare parts of the PCB board for after-sale service.
For more information, please click here. Thank you!