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The Cudy N300 LT400 is a versatile 4G LTE Cat4 modem router featuring a SIM card slot for instant mobile broadband access. It delivers up to 300Mbps WiFi speed via 802.11n on 2.4 GHz, boosted by four 5dBi high-gain antennas for extended coverage. Equipped with multiple VPN clients and DNS encryption, it ensures secure, private connections. Ideal for remote locations, holiday cabins, or as a reliable fiber alternative, it supports easy plug-and-play setup and remote management through DDNS and a user-friendly web interface.












| Brand | Cudy |
| Compatible devices | Laptop, Personal Computer, Smartphone, Tablet |
| Frequency band class | Single-Band |
| Model name | LT400 |
| Special feature | 300 Mbps WiFi, 4G LTE FDD&TDD, DDNS, VPN |
| Wireless communication standard | 2.4 GHz Radio Frequency , 802.11n |
P**9
SIM Router That Changed Everything
I honestly wish I had upgraded to this SIM card router sooner. We spent two years struggling with our old setup — barely able to use the TV, and if someone was streaming, no one else could get online. Most of the time, my housemates had to sit right next to the router, and even then only two people could connect. Speeds were slow to very slow, and coverage only reached 2–3 rooms. This new SIM card router has been a massive upgrade. It now covers the whole house with high speeds, even in our rural area where signal is usually weak. Setup was easy, and I even managed to change the password — that took a little more effort, but it was still straightforward and impressive. Hardly any issues since, and now everyone can stream or watch TV in their own rooms without a problem. Reliable, fast, and with great coverage — exactly what we needed.
T**R
Good 4g alternative to fiber and copper based WiFi options
I live in a third floor flat and was looking for a WiFi solution as my current supplier (full fiber) was unable to supply. The 5g coverage is outside only, so I decided to go for this 4g router as 4g coverage is excellent in this area. I have paired this router with a Smarty unlimited data SIM on a monthly DD payment (currently £20 pcm). My use is to stream TV Amazon fire tv (I have used a cable to the router ), working from home on lap top (multiple screens, browser tabs, Citrix corporate apps), tablet, mobile phone. This product works extremely well, speed is better than the connection in the office and whilst upload speeds are slower than the fiber I had, they are perfectly adequate for my use. My expectations for this products performance have been exceeded. The connection process was easy and my printer (CannonT55350i) and home and work laptops connected with ease, and worked well together, simply putting in the password on the bottom of the router. Coverage is not tested a one bedroom flat. I have it positioned adjacent to an external wall. Good value purchase and a realistic long term replacement to fiber and far better than copper, and with the smarty simm there is freedom from expensive contracts and punitive exit fees.
A**R
Easy to set up
great price, asy to set up and works well
L**N
Great 4G router, but developers still actively working through some glitches
Good little 4G SIM unlocked router. As an IT professional, needing an internet connection via 4G and not wanting to spend the earth on one, this fit the bill. It is only 2.4Ghz for the wi-fi signal, but seeing as 4G throughout is nowhere near the wi-fi speeds on 2.4ghz that's fine. The user interface is not badly thought out, with sections for the various functions it can do. Setting it up in the UK was relatively easy with a Giff-Gaff SIM card, the Wizard worked well and connected fine with a good signal strength. Once connected, it was good most of the time for 2 teens and my spouse, though we did manage to blow through 15gb of data in one and a half days necessitating an unlimited plan rather faster than I had hoped. Speed wise was great with multiple users on Netflix and YouTube relatively unaffected by each others usage. Unfortunately there is a big bug in the base firmware that Cudy are aware of and actively working on that we would suddenly have no connection to the internet, but still able to connect to the router over wi-fi. According to the interface on the router, the 4g was still connected, but it didn't pass the internet through anymore. It could be fixed easily enough by either rebooting the router with the power switch, our by running through the set up Wizard and just clicking next at each stage without changing anything. But not ideal solution. I emailed their support not expecting much with the problem and a copy of the system log and got a reply within 24 hours with a new firmware upload to try out. It didn't fix the problem so I sent another email with the log and received another version of firmware to try out. It worked for longer without disconnecting but still did not completely fix the problem. Unfortunately, now I am not in that place anymore so can't continue to work with their support until I return which is a shame as I think they were close to fixing it. I have left the router automatically rebooting on a schedule at 3 am every day in case it happens while I am not there to fix it. If they can get this fixed I wouldn't hesitate to recommend it to friend and family needing a 4g internet connection, but until they do, I can't. Having said that, there are some really nice features in the router interface from the traffic totals to using 4g as a back up to a normal broadband connection which are great at this price point.
P**Z
Excellent bit of kit
Needed this to use with a SIM card for temporary internet . So far so good .Signal is great throughout my whole house and outside . Works a dream . Highly recommend . Also has Ethernet ports at the back .
M**Y
Get a Cudy on a budget
Absolutely fantastic, and does what it says on the box. I bought this Modem/Router for my motorhome so I can watch my smart tv over the internet. The Smarty sim card I had did not work in the Cudy.I therefore purchased a Lebara sim card, registered it, inserted it into the cudy, and within 80 seconds, I was on the internet and got my smart tv up and running. So far, so good after a week, and no problems.
K**E
DOES NOT WORK
just don't bother it wasn't any help it kept saying to me SIM card not inserted and it was just a waste of my time and money I'm planning on sending it back just don't buy this
S**N
Reliable connection, good speed, easy set up
Easy to set up, the quick-setup guide for once was clear and accurate. The device works well, good speeds with multiple devices connected. I'm using it with a Three mobile data sim (which inserted easily, wait a minute or so and it connects automatically) so the router performance of course is inevitably dependent on the mobile signal, but that's good here. It's able to provide good quality video streaming on 2 laptops simultaneously with three phones and a tablet also running. So far it's faster and more reliable than the Vi***n network it's replaced. It's got the inevitable blue light show but they at least tell you what's working. To quote Ford Prefect: boffo, a good one.
A**E
Prima
Werkt prima met sim only van Simpel
O**O
Ottimo router 4G Cudy LT400! Perfetto per videosorveglianza in seconde case
Ho acquistato il router Cudy LT400 (specifico che si tratta di un modello 4G e non 5G) principalmente per inserirlo in un'abitazione dove non era presente una linea internet. Non mi interessavano affatto le prestazioni da Fibra o da linea cablata telefonica; mi serviva semplicemente una soluzione solida, indipendente ed economica per portare la rete in una casa in cui non vado sempre. Perché si è rivelata la scelta vincente: Gestione perfetta della SIM: Questo router 4G permette di inserire direttamente la scheda SIM al suo interno. Nel mio caso ho inserito una SIM Lycamobile (Lyca) perché ho trovato un pacchetto giga molto conveniente. Ovviamente, come consiglio per tutti, bisogna prima verificare in base alla propria zona quale linea prende maggiormente, confrontare i vari prezzi e poi acquistare la SIM con i pacchetti più convenienti e dedicati alle proprie esigenze. Ideale per la videosorveglianza: Il mio obiettivo principale era gestire quattro telecamere di videosorveglianza per poterle controllare da remoto in qualsiasi momento. Il Cudy LT400 si sta comportando benissimo: la connessione è stabile e non perde mai il segnale, permettendomi di monitorare l'abitazione a distanza senza interruzioni. Regge molti dispositivi senza problemi: Anche se il mio uso è mirato, ho notato che fino a 10 dispositivi collegati contemporaneamente non dà alcun tipo di problema o rallentamento fastidioso.Chiaramente stiamo parlando di un router 4G economico, quindi non aspettatevi massime prestazioni a livello di download o upload per scaricare file pesantissimi in un secondo, ma fa assolutamente il suo dovere e devo dire che è ottimo. Per gestire la domotica, le telecamere e una navigazione standard in case vacanza o zone isolate è un prodotto eccezionale. Straconsigliato!
F**I
Great Product! Satisfied
Great product... I wish I could map MAC addresses to a static address on the web interface. None the less, I feel like this is the beginning of a fruitful relationship between me and Cudy.
H**I
Very good product
High quality, and its the most good price for a router
R**A
Excelente
Muy bueno
Trustpilot
2 months ago
2 weeks ago