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 480836 RF EMF STRENGTH METER

• Ideal for EMF measurements of mobile/cell phones, base stations and microwave leakage
• Measurement optimized for 900MHz, 1800MHz and 2.7GHz
• Non-directional (isotropic) measurement with three-channel (triaxial) measurement probe
• Max Hold and Average functions

EXTECH EX360 8 FUNCTION TRUE RMS MULTIMETER

• Ideal for Electrical application
• True RMS for accurate AC measurements
• 6000 count white LED backlit display
• Functions include: NCV, AC/DC Voltage, Resistance, Capacitance, Frequency, Diode Test, Continuity
• Fast 60-segment Analog Bargraph for viewing trends

EXTECH HW30 HEATWATCH™ HUMIDITY/TEMPERATURE STOPWATCH

• User adjustable Heat Index alarm
• Stopwatch/chronograph mode with 1/100 second resolution
• Fastest/Slowest/Average Lap recall
• 99 lap counter with 30 lap/split memory
• 10 hour countdown timer with audible beeper warning for the last 5 seconds
• Programmable alarm
• Calendar mode displays day, month, and date

EXTECH MA250 200A AC CLAMP METER + NCV

• Built-in non-contact Voltage detector with LED alert to quickly check for the presence of live wires before testing
• 1.2" (30mm) jaw size for conductors up to 500MCM
• 4,000 count LCD display
• Multimeter functions include AC/DC Voltage, Resistance, Capacitance, Frequency, Temperature, Duty Cycle, Diode, and Continuity
• Relative Mode for Capacitance Zero and Offset Adjustment

EXTECH SD500 HUMIDITY-TEMPERATURE DATALOGGER

• Dual LCD simultaneously displays Relative Humidity and Temperature readings
• Datalogger stores readings on an SD card in Excel® format for easy transfer to a PC
• Selectable data sampling rate: 5, 10, 30, 60, 120, 300, 600 seconds or Auto
• Complete with six AAA batteries, SD memory card, universal AC Adaptor, and mounting bracket

EXTECH CL500: FREE AND TOTAL CHLORINE METER

• Portable tester for measuring of both Free and Total Chlorine up to 3.50ppm
•
• 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 MN35 DIGITAL MINI MULTIMETER

• Large easy to read digital display
• AC/DC Voltage, DC Current, Resistance, Type K Temperature, Continuity/Diode
• 1.5V and 9V Battery test function
• Convenient mini size with protective rubber holster and tilt stand
• Data Hold locks reading in the display
• Includes protective rubber holster, 9V battery, bead wire Type K temp. probe and test leads

EXTECH CO15: CARBON MONOXIDE (CO) METER

• Dual LCD simultaneously displays Carbon Monoxide (CO) level and maximum CO reading taken from when the meter was powered on
• Long life electrochemical sensor
• Adjustable CO warning level at 25, 30, 35, 45, 50, 70, 100 and 200ppm (alarm is preset to 25ppm)
• Audible alarm when CO level reaches the warning set point level
• Choose from 3 calibration points: 0 (preset), 100, and 500ppm

EXTECH MO257 PINLESS MOISTURE METER

• Non-invasive moisture content measurements in wood/building materials
• Measures relative moisture of various building materials including wood, particle board, carpeting, and ceiling tiles using non-invasive Pinless Technology
• Multifunction backlit triple LCD display
• Pinless measurement depth from 0.78" (20mm) to 1.6" (40mm) below the surface
• High frequency sensing technology

EXTECH SDL900 AC/DC MAGNETIC METER/DATALOGGER

• Utilizes Hall effect sensor with ATC (Automatic Temperature Compensation)
• Adjustable data sampling rate: 1 to 3600 seconds
• Memory stores 99 readings manually
• Datalogging feature records readings with date and time stamp on an SD card (included) in Excel® format
• N pole/S pole indicator