Signal Generators | McMaster-Carr

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Measures

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Switch Designation

Electrical Connection

Flat-Pin Mini Thermocouple Connector

Test End Component

AC Voltage

30V AC to 122,000V AC

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Printed Circuit Board

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3A992

5B991

EAR99

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AC Current

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594 Products

Measuring and Inspecting

Electrical Monitor Calibrators

Check the accuracy of electrical sensors and measuring instruments

1 product

Oscilloscope/Multimeters

Perform electrical tests, record data, and view a graph of electrical waveforms

4 products

Electrical Panel Meters

See the amount of electricity used to run motors, generators, and other equipment

78 products

Multimeters

Take current, voltage, resistance, and other electrical measurements

108 products

Multimeter Hangers

Free up your hands when using a Fluke multimeter

1 product

Current Detectors

Check for AC current and voltage without making direct contact with wire

1 product

Test Lead Tips

Adapt Fluke test leads to perform electrical tests in tight spaces

1 product

Test Lead Sensors

Adapt Fluke multimeters to take temperature readings, so you don't need a separate meter

2 products

Insulation Testers

Measure insulation quality in motors, generators, and other electrical equipment

9 products

Battery Testers

Measure the health of rechargeable batteries, or check if it's time to replace disposable batteries

1 product

Electrical Resistance Meters

Prevent damage to electronics by checking that surfaces won't discharge static electricity

4 products

Power Consumption Meters

Measure the amount of power your devices consume to help calculate energy costs

1 product

Current Meters

Measure current without interrupting the circuit

3 products

Test Leads

Pair with electrical testers such as multimeters to analyze your devices

3 products

Voltage Meters

Measure voltage in electrical components

7 products

Voltage Detectors

Check for voltage in receptacles, cables, and electrical components

13 products

Power Consumption Data Loggers

Record data to monitor energy usage and fix intermittent problems, such as voltage spikes

4 products

Line Testers

Diagnose issues in phone lines or Ethernet cables

5 products

Air Particle Counters

Monitor indoor dust levels and measure filter efficiency in HVAC systems

1 product

Thermometers

Monitor temperature in tanks, pipes, control panels, and other equipment

9 products

Electrical Power, Networking, and Controlling

Proportional-Control Relays

Gradually adjust output instead of turning on or off

12 products

Monitoring Relays

Trip circuits or sound an alarm when voltage, current, or other limits are exceeded

18 products

Relays

Electrically open and close circuits to control power to lights, motors, and other equipment

178 products

Interface Relays

Isolate input and output circuits to protect PLCs and other controllers

79 products

Latching Relays

Lock into position so they don't require constant voltage to stay switched

20 products

Safety Relays

Monitor circuits and force machines to a safe stop if the relay detects a fault

28 products

Containers, Storage, and Furniture

Multimeter Cases

Store and carry multimeters

9 products