--- product_id: 51722204 title: "Brainboxes Ethernet to 3 Relay Adapter, 4 port 10/100" brand: "brainboxes" price: "VT39289" currency: VUV in_stock: true reviews_count: 5 category: "Brainboxes" url: https://www.desertcart.vu/products/51722204-brainboxes-ethernet-to-3-relay-adapter-4-port-10-100 store_origin: VU region: Vanuatu --- # Dual redundant power inputs +5V to +30V DC Galvanically isolated 4 Ethernet ports Industrial temp range -40°C to +80°C Brainboxes Ethernet to 3 Relay Adapter, 4 port 10/100 **Brand:** brainboxes **Price:** VT39289 **Availability:** ✅ In Stock ## Summary > ⚙️ Power up your network with industrial-grade reliability and zero fuss! ## Quick Answers - **What is this?** Brainboxes Ethernet to 3 Relay Adapter, 4 port 10/100 by brainboxes - **How much does it cost?** VT39289 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/51722204-brainboxes-ethernet-to-3-relay-adapter-4-port-10-100) ## Best For - brainboxes enthusiasts ## Why This Product - Trusted brainboxes brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built for Extremes:** Operates flawlessly from freezing -40°C to scorching 80°C—perfect for harsh industrial settings. - • **Plug & Play Simplicity:** No software needed—just connect and go, saving you time and IT headaches. - • **Compact Industrial Design:** Slim, rugged form factor fits seamlessly into tight spaces without compromising durability. - • **Optimized Energy Efficiency:** Smart power consumption adapts to link status, reducing energy waste and operational costs. - • **Unstoppable Power Resilience:** Dual redundant power inputs ensure zero downtime even in critical factory or marine environments. ## Overview The Brainboxes Ethernet to 3 Relay Adapter is a compact, industrial-grade unmanaged switch featuring 4 galvanically isolated 10/100 Mbps ports. Designed for extreme environments, it supports a wide temperature range (-40°C to +80°C) and dual redundant power inputs (+5V to +30V DC) for uninterrupted operation. With no software required and optimized power consumption, it’s ideal for factory floors, vehicles, and marine applications where reliability and simplicity are paramount. ## Description Product Description Industrial Ethernet 4 Port unmanaged switch. Galvanically Isolated Ports. Industrial temperature range of -40C to +80C (-40F to 176F) and dual input redundant power supply with wide voltage range means it can be powered from USB or on the 24V factory floor. Power terminal is removable with numbered pins for easy wiring. Power consumption is optimised based on the status of the link device. No software required. Ideal for factory floor, in vehicle and marine applications. Box Contains 1 x Product; Installation CD; Quick Start Guide Review: Very good unit Review: Esta perfecto. Se alimenta con fuente de 24Vcc que es lo que se pone en cualquier cuadro. Puedes poner doble alimentación por si quieres cortar la de la emergencia y mantener solo el bus encendido. Tien 4 puertos. Para mi suficiente aunque 1 más iria genial ## Features - Slim shape - Extended temperature range - Brainboxes' easy wire feature - Redundant dual power inputs - Redundant dual power inputs: +5V to +30V DC.Galvanically isolated.Power consumption is optimized based on the status of the link device.No software needed ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00FDMOW5Y | | Are Batteries Included | No | | Best Sellers Rank | 201,568 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 1,261 in Network Switches | | Brand | Brainboxes | | Colour | Industrial | | Customer Reviews | 4.5 4.5 out of 5 stars (22) | | Date First Available | 23 Sept. 2013 | | Guaranteed software updates until | unknown | | Hardware Platform | PC | | Item Weight | 90.7 g | | Item model number | SW-504 | | Manufacturer | Brainboxes | | Operating System | PC | | Product Dimensions | 14.99 x 14.48 x 4.06 cm; 90.72 g | | Voltage | 5 Volts | | Wattage | 1.1 watts | ## Product Details - **Brand:** Brainboxes - **Colour:** Industrial - **Compatible devices:** Desktop - **Data link protocol:** USB - **Data transfer rate:** 100 Megabits Per Second - **Global Trade Identification Number:** 00837324009873 - **Hardware interface:** Ethernet - **Item weight:** 91 g - **Manufacturer:** Brainboxes - **UPC:** 808113096695 014445705086 049776036332 860350919519 837324009873 809395430801 ## Images ![Brainboxes Ethernet to 3 Relay Adapter, 4 port 10/100 - Image 1](https://m.media-amazon.com/images/I/71TFNA2kHVS.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by E***N on 29 January 2024* Very good unit ### ⭐⭐⭐⭐⭐ Review *by J***P on 21 January 2019* Esta perfecto. Se alimenta con fuente de 24Vcc que es lo que se pone en cualquier cuadro. Puedes poner doble alimentación por si quieres cortar la de la emergencia y mantener solo el bus encendido. Tien 4 puertos. Para mi suficiente aunque 1 más iria genial ### ⭐⭐⭐⭐⭐ Review *by P***Y on 3 February 2019* Perfecto para instalaciones en armarios eléctricos con carril DIN --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vu/products/51722204-brainboxes-ethernet-to-3-relay-adapter-4-port-10-100](https://www.desertcart.vu/products/51722204-brainboxes-ethernet-to-3-relay-adapter-4-port-10-100) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-06-01*