The Extech ATU 80 automotive current tester checks up to 80 amps without breaking the circuit. Mini, ATC, and Maxi blade connectors plug into the fuse block. It features a measuring range of 80 amps/48 VDC (10 seconds, max) with 0.1 amp resolution and (±2 percent + 2 digits) accuracy. Results are displayed on a 3.5-digit LCD with bargraph.

Operating Instructions

1. Turn the vehicle ignition OFF. 2. Determine if the fixed maxi‐blade (7) or one of the adaptors (mini‐blade or ATC‐blade) will be used. 3. If necessary, connect an adaptor (mini‐blade or ATC‐ blade) to the maxi‐blades by sliding the adaptor down over the maxi‐blades until it locks in place. Use caution as the blades can cause injury if mishandled. 4. Remove the fuse from the vehicle’s fuse block for the circuit under test. 5. Plug the test blades into the fuse box (where the fuse was removed). 6. If maxi‐blade fuses are being used, insert the removed maxi‐blade fuse into the fuse jack (6) on the tester cable. 7. If a mini‐blade or ATC‐blade adaptor was used, insert the shorting plug blade into the fuse jack (6) on the tester cable. The shorting plug is the supplied amber color plug. 8. Before continuing please note that tests should be limited to a 10 second period. Longer tests could damage meter. 9. Press the meter’s Power button (3) to switch it ON. 10. Press the ZERO button (5) to zero the displayed reading. 11. Power the circuit under test up to 10 seconds only and read the measured DC current on the LCD bargraph and display digits (1). 12. Press the HOLD/PEAK button (4) momentarily to freeze the displayed reading (the HOLD icon will appear). Press HOLD/PEAK again to exit (HOLD icon switches OFF). 13. Press and hold the HOLD/PEAK button to place the meter in PEAK mode (the meter captures the quick in‐rush current peak). The PEAK icon will appear. Press and hold the HOLD/PEAK button again to return to the normal operating mode (PEAK icon switches OFF). Note that the HOLD and PEAK modes can operate simultaneously. 14. When finished press Power (3) to switch the meter OFF. 15. WARNING! The fuse blades may become hot during testing. Allow to cool before removing. Do not test > 10 seconds

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The Extech EX505 True RMS Autoranging Multimeter. This meter measures AC/DC Voltage, AC/DC Current, Resistance, Capacitance, Frequency, Diode Test, and Continuity plus Thermocouple Temperature. It features a waterproof, rugged design for heavy duty use This meter is shipped fully tested and calibrated

The Extech Model DC400 clamp meter that measures up to 400A DC. This device is shipped fully tested and calibrated.

The Extech Model 42510 IR Thermometer. This thermometer measures and displays non-contact (infrared) temperature readings at the touch of a button. The built-in laser pointer increases target accuracy while the backlit LCD and handy push-buttons combine for convenient, ergonomic operation

Extech AUT600 Specifications

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Digital Tire Pressure Gauge

Tthe Extech AUT10 high accuracy tire pressure gauge. This device checks automobile tire pressure in psi, kPa, and Bar units and displays the results on the backlit LCD. The LED tip light (3) helps locate tire valve stems in dimly lit areas. OPERATION 1. Remove the tire’s valve stem cap. 2. Press the Power/Units button (1) to switch the gauge ON 3. Push the nozzle (2) onto the tire’s valve stem. Be sure to orient the nozzle straight onto the valve stem ensuring a good seal. Hissing sounds indicate a poor seal (air is escaping) 4. Keep the gauge in position until the LCD (4) reading stabilizes and then remove the gauge from the valve stem. 5. The pressure reading will remain on the backlit LCD (4) until another measurement is taken or until the gauge switches OFF 6. Use the Power/Units button (1) to change the pressure units 7. The gauge switches OFF automatically after 90 seconds of inactivity 8. Replace the batteries if the LCD does not switch ON. The battery compartment (5) is located on the rear of the gauge

Extech AUT10 SAFETY  Please observe manufacturer’s recommended tire pressure ratings.  Do not rely on the gauge if readings are unusually high/low or if the gauge appears damaged.  To clean, wipe with a damp cloth and mild detergent; do not use abrasives or solvents

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Operating Instructions 1. Determine connection type: blades (7) or alligator clamps (8). 2. Connect the desired test cable to the meter’s banana jack connector cable (6), red to red, black to black. 3. Turn the vehicle ignition OFF. 4. If testing through the vehicle fuse box: a. Remove the fuse for the circuit under test; b. Plug the blade (7) into the fuse box (where the fuse was removed); and c. Insert the removed fuse into the fuse jack on the measurement cable (9). 5. If using alligator clamps connect the black clamp onto a good ground and connect red clamp to the positive test point. 6. Before continuing please note that tests should be limited to a 10 second period. Longer tests could damage the meter. 7. Press the meter’s Power button (5) to switch it ON. 8. Press the ZERO button (3) to zero the displayed reading. 9. Power the circuit under test up to 10 seconds only and read the LCD bargraph (1) and the display digits (2) for the measured DC current. 10. Use the HOLD button (4) to freeze the displayed reading. 11. When finished press Power to switch the meter OFF. 12. WARNING! The Fuse blades or Alligator clamp may become hot during testing. Allow to cool before removing. Do not test > 10 seconds.

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Extech DC400 clamp meter DC Current Measurements   1. Set the Function switch to the 40A or 400A DC range. 2. With no conductor in the jaws, press the ZERO button to null the meter display. 3. Press the Trigger to open the current sense Jaw. 4. Fully enclose one conductor to be measured. Do not allow a gap between the two halves of the jaw. 5. Read the DCA value on the display. Data Hold To freeze the current reading on the LCD, press the HOLD button. To release the Data Hold function and return the meter to normal operation, press the HOLD button again.

Battery Replacement 1. When the low battery symbol appears on the LCD the battery must be replaced.   2. Remove the orange rubberized cover. 3. Remove the battery compartment screw. 4. Lift off the battery compartment cover and replace the 9V battery. 5. Replace compartment cover and secure the screw

Extech DC400 Specifications

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Extech AUT 30 Features

• Large digit LCD display

• For use on standard ATC blade size fuse circuits (AUT30) or mini‐blade size fuse circuits (AUT30M)

• Measuring range to 30A/48VDC (10 sec. test time max.)

Automotive 30A Current Testers

Extech AUT30 Operating Instructions 1. With the vehicle ignition OFF, remove the fuse from the circuit to be tested and set it aside. 2. Insert the meter’s fuse blades (3) into the jack from where the fuse was removed. 3. Insert the removed fuse into the meter’s fuse jack (4). 4. Press the meter’s On/Off button (2) 5. Operate the circuit under test for up to 10 seconds only; the LCD (1) will display the measured current. 6. When finished press the On/Off button to turn off the tester. 7. WARNING! The Fuse blade may become hot during testing. Allow to cool before removing. Do not test > 10 seconds.

Extech AUT30 BATTERY INSTALLATION 1. To replace the battery, remove the screw from the back of the unit and remove the cover. 2. Insert one 12V ‘A23G’ battery (observe polarity). 3. Replace the battery cover NOTE: If the meter does not work properly, check the battery to ensure that it’s fresh and properly inserted. Battery Safety Never dispose of batteries in a fire; batteries may explode or leak.

CAUTION:

Do not attempt to repair this unit. There are no user serviceable parts. Do not expose unit to extreme temperatures/high humidity Do not use the unit if it is wet or damaged Do not apply more than the rated voltage between the probe tip and ground. Do not operate with the case open

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Features

• Large digit LCD display

• For use on standard ATC blade size fuse circuits (AUT20) or mini‐blade size fuse circuits (AUT20M)

• Measuring range to 20A/48VDC (10 sec. test time max.)

Operating Instructions

1. With the vehicle ignition OFF, remove the fuse from the circuit to be tested and set it aside. 2. Insert the meter’s fuse blades (3) into the jack from where the fuse was removed. 3. Insert the removed fuse into the meter’s fuse jack (4). 4. Press the meter’s On/Off button (2) 5. Operate the circuit under test for up to 10 seconds only; the LCD (1) will display the measured current. 6. When finished press the On/Off button to turn off the tester. 7. WARNING! The Fuse blade may become hot during testing. Allow to cool before removing. Do not test > 10 seconds.

BATTERY INSTALLATION 1. To replace the battery, remove the screw from the back of the unit and remove the cover. 2. Insert one 12V ‘A23G’ battery (observe polarity). 3. Replace the battery cover NOTE: If the meter does not work properly, check the battery to ensure that it’s fresh and properly inserted. Battery Safety Never dispose of batteries in a fire; batteries may explode or leak.

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