DT500 Infrared Thermometer Gun -50~550°C | 12:1 Laser, Adjustable Emissivity

Meet the DT500 Non-Contact Infrared Thermometer Gun — a professional-grade handheld temperature measurement tool engineered for industrial technicians, HVAC professionals, automotive enthusiasts, and home users who demand speed, accuracy, and versatility. With an ultra-wide range of -50°C to 550°C (-58°F to 1022°F), a 12:1 Distance-to-Spot ratio, and fully adjustable emissivity, the DT500 delivers reliable readings across virtually any surface or application — safely, from a distance, in under a second.

Made in Mainland China.

Note: This thermometer is designed for surface and object temperature measurement only. It is not intended for measuring human or animal body temperature and is not a medical device.

Why the DT500 Stands Out

✅ Adjustable Emissivity for Accurate Readings on Any Surface

Standard infrared thermometers struggle with shiny, metallic, or reflective surfaces like copper, aluminum, and chrome — producing skewed readings due to incorrect emissivity assumptions. The DT500 solves this with a fully adjustable emissivity range of 0.10 to 0.99, letting you calibrate the sensor to match the exact material you're measuring. No more guesswork. No more inaccurate readings on tricky surfaces.

✅ 12:1 Distance-to-Spot Ratio — Measure Safely from a Distance

Ordinary thermometers force you dangerously close to hot pipes, live electrical panels, or moving machinery. With the DT500's 12:1 D:S ratio, you can stand 48 cm away and still capture a precise spot just 4 cm in diameter. Safely measure rotating equipment, high-voltage panels, exhaust systems, and scorching surfaces without risk — with pinpoint accuracy every time.

✅ Backlit LCD — Crystal-Clear Readings in Any Light

Working in a dimly lit engine bay, a dark basement, or a shadowed crawl space? The DT500's large backlit LCD display illuminates at the touch of a button, giving you a crisp, easy-to-read measurement in total darkness or bright glare. Fewer errors. Faster workflows. More confidence.

Key Features at a Glance

• Wide Temperature Range: -50°C to 550°C (-58°F to 1022°F) — covers frozen goods, ambient environments, and extreme industrial heat
• Ultra-Fast Detection: Readings in ≤0.8 seconds
• High Accuracy: ±2°C or ±2% — reliable for professional applications
• Laser Targeting: Pinpoints the exact measurement area; toggle on/off as needed
• Dual °C/°F Display: Short-press Mode button to switch units instantly
• One-Button Operation: Pull the trigger for a single reading; hold for continuous measurement (interval ≥1 second)
• Data Hold: Reading stays locked on screen after releasing the trigger for easy logging
• SCAN / HOLD Indicators: On-screen icons show measurement status at a glance
• Auto Power Off: Shuts down after ~10 seconds of inactivity to conserve battery life
• Low Battery Alert: Visual warning so you're never caught off guard
• Display Resolution: 0.1°C / 0.1°F
• Power: 2 × AAA batteries (not included)
• Certifications: CE, RoHS, UL, FCC

Technical Specifications

Where to Use the DT500

• HVAC / Heating & Cooling: Inspect air vents, ducts, radiators, and AC systems for temperature imbalances and efficiency issues
• Automotive Diagnostics: Check engine temperatures, exhaust systems, brakes, tires, and cooling components
• Electrical Inspections: Detect overheating hot spots on circuit breakers, panels, and wiring — without making contact
• Kitchen & Food Safety: Measure surface temperatures of griddles, ovens, fryers, and food storage areas
• Home Maintenance: Check room temperatures, windows, insulation, refrigerators, and more
• Greenhouse & Agriculture: Monitor soil and plant surface temperatures for optimal growing conditions

How to Set Emissivity

Long-press the Mode button to enter the 2-digit emissivity setting screen (0.10–0.99). Use button ② to decrease the digit and button ③ to increase it. Press Mode again to confirm each digit. This lets you match the sensor to the exact surface material you're measuring for the most accurate result.

Measurement Tips for Best Results

• Ensure the laser spot falls entirely on the target surface — the reading comes from the full spot area, not just the laser's center point.
• When measuring boiling liquids (water, oil, etc.), hold the thermometer at a 45°–60° angle to the surface to prevent steam or moisture from settling on the sensor.
• Avoid pointing the sensor straight down into rising steam or smoke for best accuracy.

What's in the Box

• 1 × DT500 Infrared Thermometer Main Unit
• 1 × User Manual
• Note: 2 × AAA batteries required but not included.

For more information on safe use of laser-equipped measurement tools, refer to guidance from the U.S. Consumer Product Safety Commission (CPSC). For general electrical safety best practices, visit OSHA's Electrical Safety resource.

Frequently Asked Questions

Q: What is the temperature range of the DT500 infrared thermometer gun?

A: The DT500 measures from -50°C to 550°C (-58°F to 1022°F), making it suitable for a wide variety of applications — from measuring frozen storage areas to inspecting high-heat industrial equipment, HVAC systems, automotive components, and kitchen surfaces.

Q: What does the 12:1 Distance-to-Spot ratio mean, and why does it matter?

A: The 12:1 D:S ratio means that for every 12 cm of distance between the thermometer and the target, the measurement spot is 1 cm in diameter. So at 48 cm away, you capture a precise 4 cm spot. This allows you to safely measure small targets on hot, moving, or electrically live surfaces from a safe distance — without needing to get dangerously close.

Q: Can I use the DT500 to measure body temperature or check for fever?

A: No. The DT500 is an industrial/household infrared thermometer designed for surface and object temperature measurement only. It is not a medical device and is not suitable for measuring human or animal body temperature. Do not use it as a fever screening tool.

Q: Why would I need to adjust the emissivity setting?

A: Different materials emit infrared energy at different rates. Shiny or reflective surfaces like polished metal, copper, or aluminum have low emissivity and can produce inaccurate readings if the thermometer assumes a fixed emissivity value. The DT500's adjustable emissivity (0.10–0.99) lets you dial in the correct value for the material you're measuring, ensuring precise and reliable results on virtually any surface.

Q: Does the DT500 come with batteries?

A: No, batteries are not included. The DT500 requires 2 × AAA batteries, which you will need to purchase separately. The unit features a low battery indicator to let you know when it's time to replace them.