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EXTECH 42509 Infrared Thermometer

The Extech 42509 infrared thermometer offers rapid and precise temperature measurements up to 950°F (510°C) with a 12:1 field of view using dual lasers for accurate targeting. It features adjustable high and low alarms with audible alerts and a flashing red backlit display when set limits are exceeded. An automatic blue backlit LCD provides clear readings, while adjustable emissivity ensures accurate surface temperature measurement. The device responds in just 150 milliseconds, ideal for quick spot checks, temperature spike detection, and process monitoring in industrial, HVAC, or health screening applications. Its durable double-molded housing ensures long-lasting performance.

Authorized Distributors
Source:Newark
Part No:42509
Stock:3
Inv Date:06-05-2026
Price: Unit price: $31.49
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Source:DigiKey
Part No:42509
Stock:0
Inv Date:06-05-2026
Price: Unit price: $31.49
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Part No:42509
Stock:98
Inv Date:06-06-2026
Price: Unit price: $2.96
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Part No:42509
Stock:0
Inv Date:06-06-2026
Price: N/A
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Part No:42509
Stock:0
Inv Date:06-05-2026
Price: Unit price: $31.49
Buy/RFQ:
Part No:42509
Stock:0
Inv Date:06-05-2026
Price: Unit price: $109.99
Buy/RFQ:
Part No:42509
Stock:109
Inv Date:06-05-2026
Price: Unit price: $2.23
Buy/RFQ:
Part No:42509
Stock:0
Inv Date:06-05-2026
Price: Unit price: $31.49
Buy/RFQ:
Part No:42509
Stock:0
Inv Date:06-05-2026
Price: Unit price: $31.49
Buy/RFQ:
Authorized Distributors
Part No:42509
Stock:0
Inv Date:06-05-2026
Price: Unit price: $109.99
Buy/RFQ:
Part No:42509
Stock:0
Inv Date:06-05-2026
Price: N/A
Buy/RFQ:
Part No:42509
Stock:0
Inv Date:06-05-2026
Price: Unit price: $130
Buy/RFQ:

EXTECH 42509 Infrared Thermometer Specifications:

  • Range: -20 to 510°C (-4 to 950°F)
  • Distance to target: 12:1 field of view
  • Laser convergence distance: 30.5cm (12")
  • Max resolution: 0.1°F/PC
  • Basic accuracy: ±(1% of reading + 2°F/1°C)
  • Repeatability: 20.5% or 1.8°F/1°C
  • Emissivity: 0.10 to 1.00 (adjustable)
  • Response time: 150 milliseconds
  • Display: Blue backlit dual LCD, flashes red when exceeding setpoints
  • Dimensions: 5.7 x 4 x 1.6 inches (146 x 104 x 43 mm)
  • Weight: 5707 grams (16.34 oz)
  • Includes: Case, 9V battery
  • Optional calibration traceable to NIST
  • Application: Process monitoring, temperature screening

Buy the Buy Extech Infrared Thermometer Part Number 42509 Online

Purchase the Extech infrared thermometer online now to experience quick and precise temperature readings up to 950°F with dual lasers and flashing alarms. Its 12:1 distance ratio allows accurate targeting of distant surfaces, ideal for industrial process monitoring, HVAC inspections, or health screening. The device's fast 150-millisecond response, adjustable emissivity, and durable housing provide reliable performance in demanding environments. Available with calibration traceable to NIST, this thermometer ensures accuracy and durability, making it an essential tool for professionals requiring rapid temperature assessment.

Get Extech 42509 infrared thermometer today—fast, accurate, with adjustable alarms for industrial and health screening uses.

Frequently Asked Questions

Where can I buy EXTECH 42509?

You can click on the BUY or RFQ button to purchase 42509 from an authorized EXTECH distributor.

How do I troubleshoot issues or seek technical support for part 42509?

You can download the 42509 datasheet or visit the EXTECH website for support.

Who is the manufacturer of 42509?

EXTECH

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