The Extech 380400 Resistance Decade Box is very popular for product design testing and calibration because it can be substituted into a circuit and function in the place of any component with a standard value easily. Alternatively, it can be used to identify the best value for circuit operation then read that value from the switches. Then, a resistor of the size indicated by the decade box switches can be put into the circuit.

� Durable construction

� Case may be grounded separately

� 3 binding posts permit isolated substitutions

� 1% Resistance substitution from 1 to 11,111,110O

� Seven decade ranges of resistance

� Values can be set in 1O increments

More products EXTECH

EXTECH EMF510 EMF/ELF METER

• Measure EMF/ELF levels in milliGauss (mG) or microTesla (µT) up to 2000mG (200µT) with two ranges to choose from
• Built-in single axis sensor provides basic accuracy reading of ±5%
• 30 to 300Hz bandwidth
• Backlit display to view in dimly lit areas
• Data Hold and Min/Max functions

EXTECH CO10: CARBON MONOXIDE (CO) METER

• Easy to read 1999 count backlit displays CO levels from 0 to 1000ppm
• 1ppm resolution with ±5% or ±10ppm basic accuracy (whichever is greater)
• Utilizes a stabilized electrochemical gas specific (CO) fast response sensor
• Audible alarm starts at 35ppm
• Backlight for low light conditions

EXTECH 382213: DIGITAL TRIPLE OUTPUT DC POWER SUPPLY

• Adjustable Voltage and Current output
• Easy snap terminals for fixed 5V/0.5A and 12V/1A outputs
• Constant Voltage or Current
• Current limiting indicator

EXTECH EX530 11 FUNCTION HEAVY DUTY TRUE RMS INDUSTRIAL MULTIMETER

• True RMS DMM with 11 functions and 0.06% basic accuracy
• AC/DC Voltage & Current, Resistance, Capacitance, Frequency, Temperature, Duty Cycle, Diode/Continuity
• Dual sensitivity frequency functions (electrical/electronic)
• 1000V input protection on all functions
• 20A max Current

EXTECH MD10 NON-CONTACT MAGNET DETECTOR WITH BUILT-IN FLASHLIGHT

• Detects the presence of magnetic field without contact (AC, DC, and permanent magnets)
• Ideal for testing audio speakers and relays with coils and electrically controlled solenoid valves
• Blue LED lights up for visual magnetic field indication
• Magnetic field detection range: 63H, 98H, 401H, 810H
• Built-in bright flashlight with On/Off button
• Low battery indicator
• Complete with two AAA batteries

EXTECH EX503 10 FUNCTION HEAVY DUTY INDUSTRIAL MULTIMETER

• Averaging DMM with 10 functions and 0.5% basic accuracy
• AC/DC Voltage & Current, Resistance, Capacitance, Frequency, Duty Cycle, Diode/Continuity
• Dual sensitivity frequency functions (electrical/electronic)
• 1000V input protection on all functions
• 10A max Current

WIRELESS INSPECTION VIDEO CAMERA EXTECH BR200

• BR200: Video Borescope/Wireless Inspection Camera
• 17mm camera diameter and 3.5" Color TFT LCD Wireless Monitor
• Memory card for capturing images (JPEG) or video (AVI) for viewing on your PC
• Detachable wireless 3.5" color TFT LCD display
• Captured videos and images can be viewed on the wireless monitor or transferred to your PC via the microSD card or USB cable

EXTECH CL500: FREE AND TOTAL CHLORINE METER

• Portable tester for measuring of both Free and Total Chlorine up to 3.50ppm
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• The CL500 is a free and total Chlorine meter. This chlorine tester measures up to 3.50ppm with 0.01ppm resolution on its large LCD screen. Complete with Free, Total and Zero Chlorine standard solutions, test bottles with covers, Free and Total Chlorine DPD powder (10pcs), cleaning cloth, 6 AAA batteries, and hard carrying case.

EXTECH EX470 12 FUNCTION TRUE RMS PROFESSIONAL MULTIMETER + INFRARED THERMOMETER

• True RMS DMM with 12 functions and 0.3% basic accuracy
• AC/DC Voltage & Current, Resistance, Capacitance, Frequency, TypeK & IR Temperature, Diode/Continuity, Duty Cycle
• Built-in non-contact InfraRed Thermometer with 8:1 distance to target ratio with 0.95 fixed emissivity
• Input fuse protection and mis-connection warning
• 20A max Current

EXTECH 382280: PRECISION WITH PROGRAMMABLE 200 WATT OUTPUT DC POWER SUPPLY

• High resolution (1mV and 1mA) user programmable output
• Selectable constant Voltage or Current modes
• 0 to 60 second programmable overload delay timer
• Storage/Recall memory