Elenco Caja de sustitución de Resistencia | Rango de Resistencia de 1Ω a 11, 111, 110MΩ | 1% de precisión: 1Ω-40kΩ- 1 vatio/100kΩ- 4MΩ- 1/2 vatios

Often when calibrating a multimeter I need known resistances from 1 Ohm to 10 M Ohm and this provides an excellent fit for that requirement . It saves hours of faffing around measuring and sorting 1% resistors trying to get 6 digits of precision when the heat from your fingers can move the resistance by hundreds of counts. I use a 7.5 digit meter and set the required resistance using this box in a few seconds. It’s a real time saver and the accuracy of the resistances is closer to .1% than 1% which makes things easier.

Introduction:Diagnosing and troubleshooting complex HVAC systems, such as Trane rooftop units, requires precision and accuracy. The Elenco Resistance Substitution Box has gained recognition as an essential tool for HVAC technicians due to its versatility and effectiveness. In this review, we will explore the features, functionality, and benefits of the Elenco Resistance Substitution Box specifically for diagnosing Trane rooftop units.Design and Construction:The Elenco Resistance Substitution Box is built with a sturdy and durable design, making it suitable for the demanding conditions encountered during HVAC diagnostics. It features a compact and portable form factor, with clearly labeled resistance values for easy identification and selection. The box is engineered to withstand regular use and provides reliable performance over an extended period.Resistance Value Selection:The key advantage of the Elenco Resistance Substitution Box lies in its ability to provide a wide range of resistance values. This feature is particularly valuable when diagnosing Trane rooftop units, as it allows technicians to simulate various resistance levels and identify potential issues within the system. The box typically offers a comprehensive selection of resistance values, ensuring compatibility with the requirements of Trane units.Precision and Accuracy:Accurate measurement and substitution of resistances are critical in HVAC diagnostics. The Elenco Resistance Substitution Box excels in providing precise and reliable resistance values, enabling technicians to pinpoint problems accurately. Its high-quality resistors ensure minimal tolerance deviations, resulting in accurate simulations and effective troubleshooting of Trane rooftop units.Ease of Use:The Elenco Resistance Substitution Box is designed to facilitate ease of use, even for technicians with varying levels of experience. The resistance values are clearly labeled on the box, making it straightforward to select and substitute the desired resistance. The box is also equipped with user-friendly controls, allowing technicians to adjust resistance values with ease and efficiency during diagnostic procedures.Versatility and Compatibility:While the Elenco Resistance Substitution Box is highly effective for diagnosing Trane rooftop units, its versatility extends beyond this specific application. The box can be utilized for a wide range of HVAC systems and equipment, making it a valuable tool for technicians working in various settings. Its compatibility with different resistance requirements ensures its usefulness across different HVAC brands and models.Time and Cost Savings:The Elenco Resistance Substitution Box enables technicians to quickly identify and troubleshoot resistance-related issues within Trane rooftop units. By providing a systematic and efficient approach to diagnosis, the box helps reduce the time spent on identifying the root cause of problems. Consequently, it allows for prompt repairs or adjustments, minimizing system downtime and potential revenue loss for commercial or industrial facilities.Reliability and Durability:The Elenco Resistance Substitution Box is constructed with high-quality components that guarantee long-term reliability. It is built to withstand the rigors of daily use and can handle the demanding conditions encountered during HVAC diagnostics. Its durability ensures that technicians can rely on the box for consistent and accurate resistance measurements over time, making it a valuable and dependable tool in their toolkit.Customer Satisfaction:HVAC technicians who have used the Elenco Resistance Substitution Box for Trane rooftop unit diagnosis have expressed high levels of satisfaction. They appreciate its versatility, precision, and ease of use, highlighting its effectiveness in identifying resistance-related issues. The box's compatibility with a wide range of HVAC systems adds to its appeal, making it a worthwhile investment for professionals in the field.Conclusion:The Elenco Resistance Substitution Box stands as an invaluable tool for diagnosing Trane rooftop units and other HVAC systems. Its precise resistance values, ease of use, compatibility, and durability make it an ideal choice for technicians seeking to efficiently troubleshoot and identify resistance-related issues. By investing in the Elenco Resistance Substitution Box, HVAC professionals can streamline their diagnostic procedures

Good price compared to other ones exactly the same, does exactly what I need it for

Buen producto, pero mayor error del especificado, principalmente en valores bajos.

This is a really handy tool to have when needing to do some quick testing and makes figuring out required resistance very easy, and any amount of resistance between 1 ohm and 11 mega-ohms can be dialed in using 28 switches.The claim of 1% tolerance on the resistors inside is generally not an exaggeration. The numbers you get on an ACCURATE multimeter will generally be within spec with a single caveat: with all switches set to off you will still get about a .15 to .25 ohm reading depending on the probes being used. Basically what this means is on the very low ohm settings you will get somewhere between .2 to .4 added to the reading - in the case of mine when I measure 1-100 ohms I usually get about .3 or .4 added if using probes and about a .15 - to .2 when connected with good banana plugs. Once you pass 400 ohms this largely disappears, but just be weary that you need to subtract roughly .25 ohms off the actual reading you are getting in the very low resistance range. Simple math boys and girls - it's not the end of the world. I look at it as a 29th switch to test a multimeter on a very very low ohm resistance.The simple truth is all of decade boxes of this type do this - I have seen many variations of this design cost anywhere between 40 -110 dollars and all of them have the same general 0.25 ohms added without any switches engaged - this box is one of the cheapest and it's every bit as effective as other resistance boxes of this type that cost double or almost triple what this does.Being one of the cheaper versions of this type - this box is not the most strongly constructed in the world but as long as you take care of it - it will work fine. I'm not particularly thrilled by the quality of the banana connectors - but these could easily be replaced with better connectors. They seem to work fine, although I don't know how long they will last before needing to be replaced and/or re-soldered. Time will answer. The switches seem to be of fair quality but it probably would NOT be a good idea to get too rough with them.Overall this is a very useful tool for not a lot of money - I definitely would buy this unit again. I took off one star for the accuracy category because in all fairness the much more expensive (and much larger) decade boxes don't really have this problem. However it's not a deal breaker and certainly good enough for government work (and then some). Recommended.

Una manera fácil de hacer pruebas de resistencias y escoger el valor que se requiera

Purchased this as I'm prototyping tuned circuits where close resistance tolerances make a noticeable difference in performance or balancing of circuits. While a bit on the large size, the ability to select resistances from 1 ohm to several megs, simply by flipping a few switches, enables rapid identification of ideal resistances which can then be matched with discrete components for the final design. Well-considered design. Excellent workbench tool.