AUTOOL LM55Product OverviewThe AUTOOL LM55 is a pipe clamp temperature meter designed for HVAC, refrigeration, and automotive A/C pipe temperature measurement. It helps technicians check pipe temperature in real time, view temperature waveform changes, browse historical records, and measure suitable pipes under 40mm diameter without complicated setup.Pipe Temp Clamp <40mm Pipe Diameter Real-Time Reading Waveform History0.96″Color Screen8 SetsHistory Records150sPer Record3 YearsMain Unit Warranty Click to enlarge Click to enlargeBefore You Order And UseBefore You Order And UseBefore using the LM55 HVAC temperature clamp, confirm the pipe diameter, temperature condition, battery setup, and safe storage environment.Avoid High-Temperature Adding PointsDo not place the clamp on high-temperature adding points or unsafe heating positions. For routine product-page use, keep pipe testing below 150°C.Check Pipe Diameter FirstLM55 is suitable for pipes under 40mm diameter. Do not force the clamp onto oversized or irregular surfaces.Use 3 × AAA BatteriesThe device uses a 4.5V power supply from three AAA batteries. Install batteries correctly before powering on.Keep The Clamp Surface StableFor more consistent readings, clamp the sensor firmly on a clean pipe surface and avoid loose contact during measurement.Protect The HousingAvoid rubbing the product against rough surfaces. Regularly check tightened and connected parts to maintain safe operation.Store In A Dry PlaceWhen not in use, store the LM55 in a dry place. Do not store it in hot, humid, or non-ventilated environments.Key FeaturesKey FeaturesLM55 combines a large pipe clamp, real-time temperature display, waveform recording, historical data browsing, adjustable screen settings, and compact two-button operation for pipe temperature service work.Large Clamp DesignThe clamp is designed for pipe temperature measurement and supports applicable pipe diameters under 40mm.Real-Time Temperature ReadingLive numerical display mode shows current temperature data directly, helping technicians read pipe temperature quickly.Temperature Waveform DisplayThe waveform mode shows temperature changes over time, making it easier to observe heating or cooling trends.History Data ViewingThe LM55 can store 8 sets of waveform data. Each set records up to 150 seconds and can be browsed later.Adjustable BrightnessBacklight brightness can be adjusted from 0 to 100, helping the screen remain readable in different service environments.High-Definition Color ScreenThe 0.96-inch TFT-LCD color screen with 80 RGB × 160 dots resolution displays temperature, waveform, setup, and record information.℃ / ℉ Unit SwitchingTemperature units can be switched between Celsius and Fahrenheit in the setup interface.Chinese / English LanguageThe system supports Chinese and English language options for different users and service environments.Warranty SupportAUTOOL provides a 3-year warranty for the main unit and a 1-year warranty for included accessories under eligible warranty conditions. Click to enlargeSpecificationsAUTOOL LM55 Product SpecificationsThe LM55 digital temp clamp uses a 4.5V AAA battery power supply, a 0.96-inch TFT-LCD screen, two-button control, and waveform data storage for pipe temperature measurement.Core SpecificationsProductAUTOOL LM55 Digital Temp Clamp / Pipe Clamp Temperature MeterApplicationHVAC, refrigeration, and automotive A/C pipe temperature checksRecommended Product-Page Testing LimitBelow 150°C; do not clamp high-temperature adding pointsManual Measurement Range-50°C to 260°C listed in the user manualApplicable Measurement Diameter<40mmRated Operating Voltage4.5V, 3 × AAA batteriesOperating Current<30mAStandby Power Consumption<500uADisplay0.96-inch TFT-LCD with backlightScreen Resolution80 RGB × 160 dotsButtonsToggle button and Enter buttonCasing MaterialPA6-GF45Button MaterialSilicone gelHardware Parts MaterialStainless steel and copperProduct Dimensions178 × 100mmOuter Box Dimensions123 × 54 × 215mmDisplay And Data FunctionsLive Numerical DisplayDisplays current temperature data in numerical form in real timeWaveform DisplayDisplays a temperature/time curve for real-time variation trackingHistory Records8 sets of waveform dataRecord Duration150 seconds per waveform setTemperature Units℃ / ℉ switchableBrightness0-100 adjustable display brightnessLanguagesChinese and EnglishStandby BehaviorEnters standby after no user activity or after 8 waveform sets have been collected for more than 5 minutesReminderBuzzer sounds for 15 seconds after 8 waveform data sets are completedWarrantyMain Unit Warranty3 years from receipt date under eligible warranty conditionsIncluded Accessories Warranty1 year from receipt date under eligible warranty conditions Core SpecificationsProductAUTOOL LM55 Digital Temp ClampApplicationHVAC / refrigeration / automotive A/C pipe temperature checksRecommended LimitBelow 150°C; avoid high-temperature adding pointsManual Range-50°C to 260°CPipe Diameter<40mmPower4.5V, 3 × AAA batteriesDisplay0.96-inch TFT-LCD, 80 RGB × 160 dotsRecords8 sets, 150 seconds per setUnits℃ / ℉ switchableWarranty3 years main unit, 1 year accessories ApplicationsApplicationsUse LM55 for suitable pipe temperature checks in HVAC, refrigeration, and automotive air-conditioning service. Keep the clamp within its pipe diameter and safe temperature limits.HVAC Pipe Temperature ChecksSuitable for checking pipe temperature during heating, ventilation, and air-conditioning maintenance work.Automotive A/C ServiceHelps monitor line temperature during automotive air-conditioning inspection and diagnosis.Refrigeration MaintenanceUseful for observing temperature changes on suitable refrigeration and cooling system pipes.How To UseHow To UseLM55 uses two buttons for power, confirmation, switching, waveform viewing, unit settings, brightness adjustment, and language setup.Install BatteriesInstall 3 × AAA batteries. Long-press the Enter button for 2 seconds to power on the device.Clamp The PipeClamp a suitable pipe under 40mm diameter. Avoid high-temperature adding points and unstable contact surfaces.Read Live TemperatureUse the Test icon to enter live numerical display mode and view the current pipe temperature.View Waveform And RecordsUse Wave mode to view real-time temperature/time curves and browse historical waveform records.Adjust SettingsUse Setup to switch ℃ / ℉, adjust brightness, and select Chinese or English language.Use NotesDo not force the clamp onto pipes larger than 40mm.Do not use the clamp on high-temperature adding points.For routine customer-facing use, keep pipe testing below 150°C.Pressing Enter can pause and resume real-time waveform recording.After 8 waveform records are completed, the device stops storing and reminds the user with a beep.Manual And DownloadsManual And DownloadsDownload the LM55 user manual for specifications, function descriptions, operation instructions, button descriptions, display descriptions, maintenance, warranty, and return service information. Click to enlargeAUTOOL LM55 User ManualOpen the PDF manual to check LM55 setup, buttons, temperature display modes, waveform recording, language settings, brightness settings, maintenance, and warranty details. Download ManualNeed Confirmation Before Ordering?Contact AUTOOL Store if you need help confirming pipe diameter, temperature range, battery setup, HVAC usage, automotive A/C application, warranty, or related tool selection.Email[email protected] WhatsApp 86 189 2647 7404Related ProductsRelated ProductsCompare LM55 with related AUTOOL HVAC measuring tools and digital manifold gauges. These tools are related service options, not direct LM55 feature variants.Select options This product has multiple variants. The options may be chosen on the product page Add to wishlist Add to compare Quick view iconQuick view Smart Digital Manifold GaugeAUTOOL LM55 Temp Clamp Hvac Temp ClampRated 0 out of 5(0) From US$45.00 Select options This product has multiple variants. The options may be chosen on the product page Select options This product has multiple variants. The options may be chosen on the product page Add to wishlist Add to compare Quick view iconQuick view Smart Digital Manifold GaugeAUTOOL LM120 AC Manifold Gauge Refrigerant IdentifierRated 0 out of 5(0) From US$98.00 Select options This product has multiple variants. The options may be chosen on the product page Select options This product has multiple variants. The options may be chosen on the product page Add to wishlist Add to compare Quick view iconQuick view Smart Digital Manifold GaugeAUTOOL LM120 Digital Refrigerant Gauges Hvac GaugesRated 0 out of 5(0) From US$149.00 Select options This product has multiple variants. The options may be chosen on the product page Select options This product has multiple variants. The options may be chosen on the product page Add to wishlist Add to compare Quick view iconQuick view Smart Digital Manifold GaugeAUTOOL LM150 Digital Manifold Gauges Digital AC GaugesRated 0 out of 5(0) From US$159.00 Select options This product has multiple variants. The options may be chosen on the product page Select options This product has multiple variants. The options may be chosen on the product page Add to wishlist Add to compare Quick view iconQuick view Smart Digital Manifold GaugeAUTOOL LM160 Refrigerant Leak Detector Digital Manifold GaugesRated 0 out of 5(0) From US$209.00 Select options This product has multiple variants. The options may be chosen on the product page Questions And AnswersThese answers cover LM55 pipe temperature measurement, pipe diameter, safe temperature use, waveform records, batteries, screen settings, warranty, and support. What Is AUTOOL LM55 Used For? AUTOOL LM55 is a digital pipe clamp temperature meter for HVAC, refrigeration, and automotive A/C pipe temperature checks. It helps measure pipe temperature, observe real-time temperature changes, and review historical waveform records. What Pipe Diameter Can LM55 Measure? LM55 is suitable for pipes under 40mm diameter. Do not force the clamp onto oversized pipes or irregular surfaces, because unstable contact can affect measurement reliability. Can LM55 Be Used On High-Temperature Points? No. Do not clamp high-temperature adding points or unsafe heating positions. For routine product-page use, keep pipe testing below 150°C unless the application has been confirmed by support. Why Does The Specs Table Mention A Manual Measurement Range? The user manual lists an instrument measurement range of -50°C to 260°C, while the original page also includes a warm-tip limit for product use. To avoid unsafe use, this Description highlights the practical customer-facing warning: do not clamp high-temperature adding points and keep routine testing below 150°C. Does LM55 Support Waveform And History Data? Yes. LM55 can display a real-time temperature/time waveform and store 8 sets of waveform data. Each set records up to 150 seconds, and historical waveform records can be browsed later. What Batteries Does LM55 Use? LM55 uses a 4.5V power supply from 3 × AAA batteries. Install the batteries correctly before powering on the device. Can I Switch Between Celsius And Fahrenheit? Yes. LM55 supports ℃ and ℉ unit switching. Enter the setup interface, select the unit option, choose the desired unit, and save the setting. Can The Screen Brightness Be Adjusted? Yes. The LM55 screen brightness can be adjusted from 0 to 100 in the setup interface. This helps improve readability in different workshop environments. Is There An LM55 Manual? Yes. The AUTOOL LM55 user manual is available as a PDF download in the Manual section of this Description. It includes specifications, function descriptions, operation instructions, button descriptions, display descriptions, maintenance, warranty, and return service information. What Is The Warranty For LM55? From the date of receipt, AUTOOL provides a 3-year warranty for the main unit and a 1-year warranty for included accessories under eligible warranty conditions. Warranty handling depends on the actual breakdown situation and warranty terms. How Should LM55 Be Stored And Maintained? Keep the product away from rough surfaces, regularly check tightened and connected parts, avoid corrosive liquids, and store it in a dry place. Do not store it in hot, humid, or non-ventilated environments. Which Related AUTOOL Tools Are Listed In Quick Search? The Quick Search section lists LM55 and related AUTOOL HVAC or A/C service tools, including LM120, LM120 , LM150, and LM160. These products are related service tools, not direct LM55 function variants.Warranty And ContactWarranty And ContactFor LM55 pipe diameter confirmation, temperature range questions, HVAC or automotive A/C usage, manual help, warranty support, or related LM-series tool selection, contact AUTOOL Store directly.Pre-Sales And Product SupportUse support if you need help confirming whether LM55 is suitable for your pipe size, temperature condition, refrigeration service task, automotive A/C application, or related HVAC measuring tool selection.Pipe diameter and temperature condition confirmationHVAC, refrigeration, and automotive A/C use explanationManual download and operation guidanceBattery setup, brightness, unit, and language setting helpWarranty support for eligible casesRelated LM55 / LM120 / LM120 / LM150 / LM160 product selectionEmail Support[email protected] WhatsApp Support 86 189 2647 7404
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