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Description
TESTBOY Spannungs-/Durchgangsprüfer Profi III LCD 3-1000 V AC/4-1400 V DC ( 4000828929 )Lieferumfang: Spannungs Durchgangsprfer Profi III LCD 3 1000 V AC 4 1400 V DC Lieferung inkl. Batterien (2 x Typ AAA), Ersatzbatterien siehe Art. Nr. 4000 901 770 Produktbeschreibung: zweipolig automatische Prfbereichsauswahl Anzeige von Spannung auch ohne Batterie einpolige Phasensuche zweipolige Drehfeldprfung Widerstandsmessung von 10 199,9 k Durchgangsprfung mit akustischem und optischen Signal 0 10 k Spannungsbereich 3 1000 V AC 4 1400 V DC
Lieferumfang:
Spannungs-/Durchgangsprüfer Profi III LCD 3-1000 V AC/4-1400 V DC
Lieferung inkl. Batterien (2 x Typ AAA), Ersatzbatterien siehe Art.-Nr. 4000 901 770
Produktbeschreibung:
zweipolig · automatische Prüfbereichsauswahl · Anzeige von Spannung auch ohne Batterie · einpolige Phasensuche · zweipolige Drehfeldprüfung · Widerstandsmessung von 10 - 199,9 kΩ · Durchgangsprüfung mit akustischem und optischen Signal 0 - 10 kΩ · Spannungsbereich 3 - 1000 V AC / 4 - 1400 V DC · Frequenzanzeige 0 - 500 Hz · FI/RCD-Prüftest (30 mA) mittels zwei Tasten · abschraubbare 4 mm Prüfspitzenadapter und GS 38 Prüfaufsätze · Data-Hold (bei Spannung und Widerstand) · optimale Einhandbedienung (Schutzkontakt + CEE Steckdosen) · optisches und vibrierendes Signal bei lebensbedrohlicher Spannung ab 35 V · Taschenlampenfunktion · automatische Hintergrundbeleuchtung · Überspannungskategorie: CAT IV 1000 V · Messbereich: Wechselspannung: 3-1000 V AC (T-RMS/RMS) Gleichspannung: 4-1400 V DC
Technische Daten:
- Arbeitsweise: zweipolig
- Schutzart: IP65
- Durchgangsprüfung: Summer / LED
- prüfpflichtig: ja
Da wir Batterien und Akkus bzw. solche Geräte verkaufen, die Batterien und Akkus enthalten, sind wir nach dem Batteriegesetz (BattG) verpflichtet, Sie auf Folgendes hinzuweisen: Das Symbol des durchgestrichenen Mülleimers auf Batterien oder Akkumulatoren bedeutet, dass diese nach Verbrauch nicht im Hausmüll entsorgt werden dürfen. Sofern Batterien oder Akkumulatoren Quecksilber, Cadmium oder Blei enthalten, finden Sie das jeweilige chemische Zeichen (Hg, Cd oder Pb) unterhalb des Symbols des durchgestrichenen Mülleimers. Jeder Verwender von Batterien oder Akkumulatoren ist gesetzlich verpflichtet, alte Batterien und Akkumulatoren zurückzugeben. Sie können dies kostenfrei im Handelsgeschäft oder bei einer anderen Sammelstelle in Ihrer Nähe tun. Adressen geeigneter Sammelstellen in Ihrer Nähe können Sie von Ihrer Stadt-oder Kommunalverwaltung erhalten. Bei Batterien, die mehr als 0,0005 Masseprozent Quecksilber, mehr als 0,002 Masseprozent Cadmium oder mehr als 0,004 Masseprozent Blei enthalten, befinden sich unter dem Mülltonnen-Symbol die chemischen Bezeichnungen des jeweils eingesetzten Schadstoffes. Die chemischen Bezeichnungen haben dabei folgende Bedeutung: Pb: Batterie enthält Blei Cd: Batterie enthält Cadmium Hg: Batterie enthält Quecksilber
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4.3 ★★★★★
Based on 17 reviews
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Product Reviews
★★★★★ 5
The best on the subject since LDD3
Format: Paperback
I found this book as impacting me as LDD (by Rubini etc) has been in its days, a de-facto standard established to the point that people keep searching for LDD4/LDD5 to these days, that much desirable.
Since LDD3 the last update on 2.6, this book (as well as kernel debugging and hands-on systems programming) is a valuable source of information for modern kernels 5 and 6 for a few years to come.
Knowledgeable and easy to follow, captivating attention to keep on reading it through, impressive for a technical book. LDD4+ has now found reincarnated, thank you very much for all the effort composing it!
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Reviewed in the United States on April 11, 2024
★★★★★ 5
Compelling, informative, and accurate
Format: Kindle
I really could not be happier with the pace and level of detail this book provides. I am a very surface-level Linux user and I wanted to dive in head first. I often find that when I learn about something that I consider really hard or intimidating in tech, I get better at day-to-day use of the tools and my confidence grows. This book is a real confidence-booster if you crave the knowledge of how things work under the hood.
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Reviewed in the United States on October 8, 2024
★★★★★ 5
Great book to read
Format: Paperback, Format: Paperback
Great book to keep you updated about upstream Linux
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Reviewed in the United States on March 18, 2024
★★★★★ 5
A Hands-On and Deep Guide to Linux Kernel Programming
Format: Paperback
Linux Kernel Programming, Second Edition is a very practical and well-structured book for anyone who wants to understand how the Linux kernel works. It focuses on both theory and real hands-on learning. The book uses a clear style and explains complex topics in a simple way. It is designed to help readers build real skills, not just read concepts. It is especially useful for developers who want to work closer to the operating system.
One of the most interesting parts of the book is the strong introduction to kernel programming. It explains how to set up a development environment, build the Linux kernel from source, and write the first kernel module. This section gives readers a solid starting point and builds confidence early in the learning process. It also explains why loadable kernel modules are widely used in real-world projects.
Another highlight is the deep coverage of kernel internals. The book explains core concepts such as kernel architecture, processes, threads, and the difference between user mode and kernel mode. These ideas are often hard to understand, but the book presents them in a clear and structured way. This helps readers see how the operating system really works under the surface.
The memory management section is especially strong and detailed. The book spends several chapters explaining how memory is allocated and managed inside the kernel. It also explains advanced topics such as page allocation, memory reclaim, and the out-of-memory system. These chapters are very useful for understanding performance and stability in real systems.
Another very interesting section is the coverage of CPU scheduling. The book explains how the Linux kernel decides which task runs at a given time. It introduces scheduling policies, priorities, and modern features like control groups. The explanations are practical and supported by examples, which makes the topic easier to follow.
The chapters on kernel synchronization are also a major highlight. They explain concepts such as locks, atomic operations, and deadlock prevention. These topics are critical for writing safe and reliable kernel code. The book also shows real examples and common mistakes, which helps readers avoid problems in their own work.
Another strength of the book is its hands-on approach. It includes many kernel modules, scripts, and examples that readers can try themselves. This makes learning more engaging and helps turn theory into real skills. The focus on practical work makes the book stand out from more theoretical resources.
Overall, this book is a great choice for developers, system programmers, and engineers who want to understand the Linux kernel in depth. It starts with the basics and moves into advanced topics in a smooth way. The combination of clear explanations and practical examples makes it a strong and valuable learning resource.
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Reviewed in the United States on April 16, 2026
★★★★★ 4
Poor quality binding
Format: Paperback, Format: Paperback
Binding glue fell apart in less than a week and the pages fell out. Content is great though and I have a shiny new kernel based on Kali. 4 stars despite the binding because the content is top tier if you love all things Linux 🤌
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Reviewed in the United States on July 4, 2025
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