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Shop Extech products at National Supply Network, a trusted industrial supply distributor serving warehouses, contractors, facility maintenance teams, manufacturers, schools, and government buyers across the United States.

Extech specializes in Measuring and Inspectings, Lighting and Electricals, and Safeties for commercial, industrial, warehouse, and maintenance applications. Browse our selection with competitive pricing, quote support, and nationwide shipping.

✓ Competitive pricing

✓ Bulk and freight quote support

✓ Nationwide shipping

✓ Trusted industrial manufacturers

Why Buy Extech from National Supply Network?

National Supply Network provides reliable access to Extech Measuring and Inspectings, Lighting and Electricals, and Safeties for warehouses, contractors, maintenance teams, and industrial facilities. Whether you are replenishing supplies, completing a project, or sourcing replacement products, we help streamline procurement with dependable sourcing and responsive support.

Our team works with businesses across the U.S. to provide fast quotes, competitive pricing, and efficient delivery on industrial supply orders of all sizes.

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Products 97-120 of 127

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Extech HD750 5 Max psi, +/-0.3% FS% Accuracy, Differential Pressure Manometer Image

HD750 5 Max psi, +/-0.3% FS% Accuracy, Differential Pressure Manometer

Manufacturer: Extech

Item Number: 1447135-MS

Manufacturer Part ID: HD750

Extech HW30 Digital Thermometer Stopwatch Clock Image

HW30 Digital Thermometer Stopwatch Clock

Manufacturer: Extech

Item Number: 36965747-MS

Manufacturer Part ID: HW30

Extech IR267 -50 to 600°C (-58 to 1,112°F) Infrared Thermometer Image

IR267 -50 to 600°C Infrared Thermometer

Manufacturer: Extech

Item Number: 49282635-MS

Manufacturer Part ID: IR267

Extech IR400 -20 to 332°C (-4 to 630°F) Infrared Thermometer Image

IR400 -20 to 332°C Infrared Thermometer

Manufacturer: Extech

Item Number: 91408997-MS

Manufacturer Part ID: IR400

Extech LT300 40 to 40,000 FC, Light Meter Image

LT300 40 to 40,000 FC, Light Meter

Manufacturer: Extech

Item Number: 77721694-MS

Manufacturer Part ID: LT300

Extech LT40 AAA Batteries, 40,000 FC, LCD Display, Color Corrected Photodiode, Light Meter Image

LT40 AAA Batteries, 40,000 FC, LCD Display, Color Corrected Photodiode, Light Meter

Manufacturer: Extech

Item Number: 53922258-MS

Manufacturer Part ID: LT40

LT505 Wide Range Foot-Candle/Lux Light Meter

LT505 Wide Range Foot-Candle/Lux Light Meter

Manufacturer: Extech

Item Number: 20759148-MS

Manufacturer Part ID: LT505

Extech MA120 Auto Ranging Clamp Meter: CAT II, 0.7" Jaw, Clamp On Jaw Image

MA120 Auto Ranging Clamp Meter: CAT II, 0.7" Jaw, Clamp On Jaw

Manufacturer: Extech

Item Number: 87763595-MS

Manufacturer Part ID: MA120

Extech MA445 Auto Ranging Clamp Meter: CAT III, Clamp On Jaw Image

MA445 Auto Ranging Clamp Meter: CAT III, Clamp On Jaw

Manufacturer: Extech

Item Number: 49280902-MS

Manufacturer Part ID: MA445

Extech MF100 EMF Meters; Meter Type: EMF/ELF ; Display Type: LCD ; Maximum Frequency (Hz): 60 ; Minimum Frequency (Hz): 50 ; Power Supply: 9V ; Includes: 9V Battery; Uniaxial Magnetic Probe Sensor with Protective Cover; Hard Carrying Case Image

MF100 EMF Meters; Meter Type: EMF/ELF ; Display Type: LCD ; Maximum Frequency : 60 ; Minimum Frequency : 50 ; Power Supply: 9V ; Includes: 9V Battery; Uniaxial Magnetic Probe Sensor with Protective Cover; Hard Carrying Case

Manufacturer: Extech

Item Number: 61157186-MS

Manufacturer Part ID: MF100

Extech MO210 32 to 104°F Operating Temp, Pocket Size Moisture Meter Image

MO210 32 to 104°F Operating Temp, Pocket Size Moisture Meter

Manufacturer: Extech

Item Number: 77334191-MS

Manufacturer Part ID: MO210

Extech MO280 Pinless Moisture Meter Image

MO280 Pinless Moisture Meter

Manufacturer: Extech

Item Number: 77334209-MS

Manufacturer Part ID: MO280

Extech MO290 Digital Psychrometers; Type: 5-in-1 Pinless Moisture Psychrometer ; Minimum Dew Point (F): -22.0 ; Maximum Dew Point (F): 199 ; Minimum Humidity: 0 ; Maximum Temperature: 140.00; 140.00C; 140.00F ; Resolution (Degrees): 0.10F; 0.10C Image

MO290 Digital Psychrometers; Minimum Dew Point : -22.0 ; Maximum Dew Point : 199 ; Minimum Humidity: 0 ; Maximum Temperature: 140.00; 140.00C; 140.00F ; Resolution : 0.10F; 0.10C ; Measures: Humidity

Manufacturer: Extech

Item Number: 58636408-MS

Manufacturer Part ID: MO290

Extech MO55 32 to 122°F Operating Temp, Moisture Meter Image

MO55 32 to 122°F Operating Temp, Moisture Meter

Manufacturer: Extech

Item Number: 49276231-MS

Manufacturer Part ID: MO55

Extech PH100 0 to 14 pH, pH Meter Image

PH100 0 to 14 pH, pH Meter

Manufacturer: Extech

Item Number: 79255592-MS

Manufacturer Part ID: PH100

Extech PRT200 3 Phase, 75 to 1,000 VAC, 45 to 65 Hz, 14 to 122°F, LED Display Phase Rotation Tester Image

PRT200 3 Phase, 75 to 1,000 VAC, 45 to 65 Hz, 14 to 122°F, LED Display Phase Rotation Tester

Manufacturer: Extech

Item Number: 43280833-MS

Manufacturer Part ID: PRT200

$Extech RF11 Brix Refractometer Image$

RF11 Brix Refractometer

Manufacturer: Extech

Item Number: 58636382-MS

Manufacturer Part ID: RF11

$Extech RF12 Brix Refractometer Image$

RF12 Brix Refractometer

Manufacturer: Extech

Item Number: 73615726-MS

Manufacturer Part ID: RF12

$Extech RF15 Brix Refractometer Image$

RF15 Brix Refractometer

Manufacturer: Extech

Item Number: 4537643-MS

Manufacturer Part ID: RF15

$Extech RF40 Antifreeze and Battery with Auto Temp Compensation Refractometer Image$

RF40 Antifreeze and Battery with Auto Temp Compensation Refractometer

Manufacturer: Extech

Item Number: 86984663-MS

Manufacturer Part ID: RF40

Extech RH300 Digital Psychrometers; Type: Humidity/Dew Point Digital Psychrometer ; Minimum Dew Point (F): -90.4 ; Maximum Dew Point (F): 122 ; Minimum Humidity: 0 ; Maximum Humidity: 100 ; Maximum Temperature: 122.00; 122.00C; 122.00F Image

RH300 Digital Psychrometers; Minimum Dew Point : -90.4 ; Maximum Dew Point : 122 ; Minimum Humidity: 0 ; Maximum Temperature: 122.00; 122.00C; 122.00F ; Resolution : 0.10F; 0.10C ; Measures: Dew Point; Relative Humidity

Manufacturer: Extech

Item Number: 79942074-MS

Manufacturer Part ID: RH300

Extech RHT10 -40 to 158°F, 0 to 100% Humidity Range, Temp Recorder Image

RHT10 -40 to 158°F, 0 to 100% Humidity Range, Temp Recorder

Manufacturer: Extech

Item Number: 56903792-MS

Manufacturer Part ID: RHT10

Extech RHT20 -40 to 158°F, 0 to 100% Humidity Range, Temp Recorder Image

RHT20 -40 to 158°F, 0 to 100% Humidity Range, Temp Recorder

Manufacturer: Extech

Item Number: 92908292-MS

Manufacturer Part ID: RHT20

Extech RPM33 Accurate up to 0.05%, Contact and Noncontact Tachometer Image

RPM33 Accurate up to 0.05%, Contact and Noncontact Tachometer

Manufacturer: Extech

Item Number: 40507790-MS

Manufacturer Part ID: RPM33