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Ships within 48 hours · Estimated delivery Jul 18 - Jul 23
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Description
Teltonika Dual-SIM LTE Gateway - I/O, Ethernet, RS232/485 + GPSThe Teltonika TRB256 is an industrial grade 4G LTE NB IoT gateway that provides robust connectivity for a wide range of IoT applications. With dual SIM functionality, multiple WAN interfaces, and support for the 450 MHz frequency band, it ensures reliable performance in challenging environments. Features Dual SIM Functionality: Allows for automatic switching between SIM cards to maintain connectivity in case of weak signal, data limit, or roaming.
The Teltonika TRB256 is an industrial-grade 4G LTE NB-IoT gateway that provides robust connectivity for a wide range of IoT applications. With dual SIM functionality, multiple WAN interfaces, and support for the 450 MHz frequency band, it ensures reliable performance in challenging environments.
Features
- Dual SIM Functionality: Allows for automatic switching between SIM cards to maintain connectivity in case of weak signal, data limit, or roaming.
- Multiple WAN Interfaces: Equipped with I/O ports, RS232, RS485, and an Ethernet port for versatile connectivity options.
- 450 MHz Frequency Support: Offers superior LTE signal penetration, making it ideal for various M2M applications.
- Industrial-Grade Design: Built to withstand harsh conditions with an operating temperature range of -40 °C to 75 °C and an ingress protection rating of IP30.
- Remote Management: Compatible with Teltonika's Remote Management System (RMS) for easy monitoring and management of devices from anywhere.
Specifications
- Dimensions: 83 x 25 x 74.2 mm
- Weight: 165 g
- Operating Temperature: -40 °C to 75 °C
- Power Consumption: Idle <2 W, Max <3.5 W
- Ethernet Port: 1 x RJ45, 10/100 Mbps
- Digital Inputs: 3 configurable inputs
- Digital Outputs: 3 configurable outputs, Open collector output, max output 30 V, 300 mA
- Power Supply: 9 – 30 VDC, reverse polarity protection
- Casing Material: Aluminium housing
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
4.3 ★★★★★
Based on 14 reviews
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Product Reviews
★★★★★ 5
Great socks!
Size: Medium, Color: (252) Blush Beige / White / Castlerock
Love these socks so much I got a second package. I like how thin and airy they are and they never slide down my heel. For thin socks they’re pretty durable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 16, 2025
★★★★★ 5
Great
Size: Medium, Color: (001) Black / Black / Pitch Gray
The best pair of work / workout / casual socks I've bought in long time! They're no show on all my sneakers, incredibly comfortable and they never move.
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Reviewed in the United States on October 7, 2025
★★★★★ 5
LOVE THEM!!
Size: Small, Color: (001) Black / Black / Castlerock
LOVE! These socks are so comfortable! I wear a 5 in women's and a 3 in big kid shoes. The small fit me perfectly. I see where some say they run small but I can't say that was an issue for me. They are "snug" but thats what you want with a no show sock. I feel they have support vs the ones i used to buy at Walmart. They are very soft! I am actually buying more today and throwing my other ones in the trash!
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Reviewed in the United States on February 18, 2026
★★★★★ 5
So will not write down your foot
Size: Medium, Color: (001) Black / Black / Castlerock
I love these socks. They have a little bit of gel on the top of the heel for support in your tennis shoes and so your socks don’t write down. Very good quality.
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Reviewed in the United States on May 6, 2026
★★★★★ 5
Comfy and Stay Put
Size: Medium, Color: (002) Black / Black / Halo Gray
These socks are honestly great. They’re super thin and light, so once you have them on, you kind of forget they’re even there. No bulky feeling in your shoes at all.
The best part is they actually stay on. I hate no-show socks that slide down after five minutes, and these don’t do that. The little grip on the heel really works, so you’re not constantly adjusting them all day.
They’re breathable too, which is nice if your feet run warm. They dry fast and don’t get that gross sweaty feeling. And there’s no annoying seam on the toe, so nothing rubs or feels uncomfortable.
Basically, they’re just comfy, stay put, and don’t cause problems — which is all I want from socks.
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Reviewed in the United States on January 16, 2026
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