Best in 7 days
Pay in installments of $1025.49 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jun 26 - Jul 1
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Módulo de control OM120 12 relés 192 pisos alerta preestablecida grupos de ascensores configuración biométricaMdulo de control OM120 con 12 rels de salida que permite el manejo de hasta 192 pisos en sistemas de elevadores. Incluye alerta preestablecida para alarmas APB y resistencia de final de lnea en RS 485. Dimensiones: 90 x 190 mm. Compatible con grupos de ascensores en zonas de alarma y requiere licencia para funciones avanzadas. Caractersticas Se pueden agregar grupos de ascensores a una determinada zona de alarma contra incendios Requiere una licencia
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
Discover Niche Categories That Outsell
Top-Converting Item to Boost Your Average Order
Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.8 ★★★★★
Based on 69 reviews
Sort
Product Reviews
★★★★★ 4
Overall it was an OK book. I am already ...
Format: Paperback
Overall it was an OK book. I am already "competent" with DNS, specifically the BIND9 implementation but I got the book as reference material since the official documentation is a little sparse. The fifth edition (not sure about the others) even covers, albeit a little too briefly, how to deal with reverse lookup zones with subnet masks that do not fall on octet boundaries.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 31, 2015
★★★★★ 5
Domain Names...Serves us!
Format: Paperback
This is the most complete and must-have DNS book i've ever seen before. Nor only prepares you to understand every basic and some advanced issues about DNS, it also shows a lot of "tricks" with the most powerfull and well know - famous DNS implementation!: BIND.
If you are a beginner in the DNS world, this is a good step towards become an expert, if you're already an expert this guide will surely show you a lot of useful information in your daily DNS administration problems.
Definitely, this was one of my best investments on my way to become a site administrator.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 11, 2011
★★★★★ 5
Thicker than I anticiapted
Format: Paperback
The encyclopedia of DNS books, meaning thicker than a phone book.
I like the fact that this book is thick but so easy to read and follow along with. If you know nothing about DNS, this book makes it easy to learn about DNS. It starts with the history of DNS and then explains the hierarchy of the DNS tree. A must read if you want to improve your understanding of the internet and what happens under the hood for name resolution.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 7, 2014
★★★★★ 5
Best practical book on DNS and how it works
Format: Kindle
I was interested in finding out more about how DNS is deployed and operated in practice. The first few chapters in this book deliver very well in this regard. My motivation was to find out more about how a certain type of Internet attack -- the "open DNS resolver attack" -- works. Even though this book was written well before this attack became popular and well known -- and therefore the attack is not mentioned, let alone analyzed -- the book was still quite helpful to me.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2014
★★★★★ 5
DNS reference
Format: Paperback
The book arrived in perfect condition. This a reference of dns related knowledge.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 11, 2024
recommand products
Estuche Silver Invencible Diesel Set Hombre - Eau De Toilette - 75ml
81500.00
Perfume Riviera Neroli Fragrance World Eau De Parfum 80ml
93000.00
Estuche Perry Ellis 360 Deluxe Set Mujer - 100ml - Eau De Toilette
128000.00
Bright Leather Ferragamo 100ml EDT Hombre
153000.00
Perfume Xo Xclusif Oud Noir Orientica 120ml Extrait De Parfum
213000.00