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Description
Knox Argon VM II 4000 3KW Off Grid Solar Inverter With PV 4000WKnox Argon VM II 4000 3KW Off Grid Solar Inverter with PV 4000W The Knox Argon VM II 4000 is an efficient off grid solar inverter designed for small to medium off grid solar systems. Featuring a robust IP21 rated design, it ensures reliable indoor use with easy installation and live monitoring capabilities. Key Features IP21 rated Design for Indoor Use: Ideal for protected indoor environments, ensuring durability and safety with resistance to dust and
Knox Argon VM II 4000 3KW Off-Grid Solar Inverter with PV 4000W
The Knox Argon VM II 4000 is an efficient off-grid solar inverter designed for small to medium off-grid solar systems. Featuring a robust IP21-rated design, it ensures reliable indoor use with easy installation and live monitoring capabilities.
Key Features
- IP21-rated Design for Indoor Use: Ideal for protected indoor environments, ensuring durability and safety with resistance to dust and water splashes.
- 4000W PV Input: Perfect for bifacial solar panels, enabling higher energy generation and better performance in various lighting conditions.
- Wide MPPT Voltage Range (60 – 450V): Provides flexibility in solar panel selection and ensures efficient energy conversion across a variety of system setups.
- Quick & Easy Installation: Designed for fast and simple installation using standard tools, saving both time and effort.
- Easy Commissioning & Monitoring: Equipped with an LED screen for live monitoring, providing real-time access to system performance and settings.
The Knox Argon VM II 4000 is a reliable choice for off-grid solar power applications, offering ease of use, high efficiency, and durable performance.
Technical Data Sheet:
| Rated Power | 3000VA/3000W |
| INPUT | |
| Voltage | 230 VAC |
| Selectable Voltage Range | 170-280 VAC (For Personal Computers) ; 90-280 VAC (For Home Appliances) |
| Frequency Range | 50 Hz/60 Hz (Auto sensing) |
| OUTPUT | |
| AC Voltage Regulation (Batt. Mode) | 230VAC ± 5% |
| Surge Power | 6000VA |
| Efficiency (Peak) | 93% |
| Transfer Time | 10 ms (For Personal Computers) ; 20 ms (For Home Appliances) |
| Waveform | Pure sine wave |
| BATTERY | BATTERY |
| Battery Voltage | 24 VDC |
| Floating Charge Voltage | 27 VDC |
| Overcharge Protection | 32 VDC |
| SOLAR CHARGER & AC CHARGER | |
| Solar Charger Type | MPPT |
| Maximum PV Array Open Circuit Voltage | 450VDC |
| Maximum PV Array Power | 4000W |
| MPP Range @ Operating Voltage | 60 ~ 400 VDC |
| Maximum Solar Charge Current | 100 A |
| Maximum AC Charge Current | 80A |
| Maximum Charge Current | 100A |
| PHYSICAL | |
| Dimension, D x W x H (mm) | 120 x 300 x 440 |
| Net Weight (kgs) | 10 |
| Communication Interface | RS232/RS485, optional WiFi |
| ENVIRONMENT | ENVIRONMENT |
| Humidity | 5% to 95% Relative Humidity (Non-condensing) |
| Operating Temperature | -10°C to 50°C |
| Storage Temperature | -15°C to 60°C |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 12 reviews
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Product Reviews
★★★★★ 5
Bigger than expected, but my pup enjoys it
Color: Green Bird
This toy has been a great surprise for my dog. The green bird design is cute, but more importantly it’s actually held up really well to her throwing it around and chewing. The material feels sturdy, and the stitching has stayed intact even after lots of chewing, tugging, and carrying it around all day. It's bigger than I expected, but that hasn't deterred my Chihuahua. As a 2-1/2 year old with plenty of energy, she is definitely getting lots of use out of it!
What I like most is that it keeps my dog engaged — the squeaker grabs attention right away, and it’s perfect for interactive play like tug-of-war. It’s soft enough to be a comfort toy but durable enough to handle rough play, which is hard to find.
Overall, a fun and well-made toy that keeps my pup entertained and has lasted longer than many other dog toys I’ve tried. Definitely a good choice for dogs that love to chew and play hard.
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Reviewed in the United States on May 18, 2026
★★★★★ 1
Not Meant For Aggressive Chewers
Color: Brown Bird
Lasted 5 minutes. Definitely not for the aggressive chewers.
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Reviewed in the United States on April 12, 2026
★★★★★ 5
Strong toy
Color: Gray Bird
My dogs absolutely love this toy! I must get more. They are rly durable and I’d recommend this toy to others.
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Reviewed in the United States on June 10, 2026
★★★★★ 4
The toys body is very durable, but the squeakers were broken within minutes without tearing it apart
Color: Green Bird
This is a squeaky dog toy that was supposedly very durable. I have to say that the squeakers are not durable and were immediately destroyed by my husky. The actual body of the toy is very durable and they were not able to rip it apart. They were able to destroy the squeakers without damaging the actual exterior of this toy. The toy itself is pretty soft except where it’s made of rope. Since it didn’t have any stuffing come out I will say that it was durable enough for chewing. This would be suitable for large larger dogs and even smaller dogs. I do feel this is a good value for the money because they were not able to rip it apart. I just wish the squeakers were more durable inside because there’s no way to replace those.
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Reviewed in the United States on June 4, 2026
★★★★★ 5
Our dogs new favorite toy
Color: Green Bird, Color: Green Bird
Our golden doodle loves this toy. He isn't a highly aggressive chewer necessarily, but he has been known to destroy toys by chewing on them and such. This one, so far, has lasted over a month or so. It has turned out to be his go to toy when he's wanting to play with one. The squeaker isn't that loud and it's not that easy to find. I like that legs are rope material and makes it good for tug of war, which Max loves to do.
The material is pretty sturdy and it is a good weight. Sometimes when the toys are too heavy Max won't catch them in the air, this one he catches in the air just fine. It's very cute and I think it will hold up just fine to our Max's level of chewing.
I felt the price was quite reasonable considering how much he likes it.
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Reviewed in the United States on May 2, 2026
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