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5

E

Contents

• Stud Sensor Information
• User Safety

• Battery Safety
• Installing AAA Batteries

• Using the Stud Sensor

• Maintenance
• Troubleshooting
• Service and Repairs

• Warranty
• Specifications

Stud Sensor Information

The Stud Sensor CMHT77620/CMHT77621 uses electronic signals 
to locate the center of wood or metal studs, or live AC wires 
through drywall or other common building materials.

PLEASE NOTE:

•  The stud sensor will not detect objects in concrete, mortar, 

block, brick work, plaster, carpeting, foil- faced materials, 
metallic surfaces, or ceramic tile.

•  The stud sensor is not designed to locate non-ferrous or plastic 

objects, such as pipes.

Once the center of a wood or metal stud has been detected in one 
pass across the surface, the Stud Sensor CMHT77620/CMHT77621 
turns on an LED and sounds an audible tone. A marking hole 
allows you to easily note the stud center

User Safety

Safety Guidelines

 

The definitions below describe the level of severity for each signal 

word. Please read the manual and pay attention to these symbols.

  

WARNING:

 Indicates a potentially hazardous situation 

which, if not avoided, could result in serious injury.
 

CAUTION: 

Indicates a potentially hazardous situation 

which, if not avoided, may result in minor or moderate 

injury.

NOTICE: 

Indicates a practice not related to personal injury 

which, if not avoided, may result in property damage.

If you have any questions or comments about this or any 

CRAFTSMAN

®

 tool, go to http://www.CRAFTSMAN.com.

WARNING:

Read and understand all instructions.

 

Failure to follow 

the warnings and instructions in this manual may 

result in serious personal injury.

SAVE THESE INSTRUCTIONS

WARNING:

The following label information can be found on your tool 

for your safety.

CAUTION:

Protect your eyes. Wear safety goggles.
WARNING:

This tool is not a measuring device and should not be 

used as a substitute for a voltmeter.
WARNING:

The LED or Live Wire Detection symbol on the display 

is just an indicator and in some situations the voltage 

detection option may not accurately indicate the 

presence of voltage in a wall in the event of internal 

device failure or improper operation, and therefore 

should not be solely relied upon for identification of the 

presence of hazardous voltages. Other evidence, such 

as construction blueprints or visual identification of 

wiring or conduit entry points should also be utilized.

Always follow proper safety practices and use a 

separate detection method to verify a de-energized 

condition prior to commencing work.

WARNING:

Always turn off AC power when working near wiring.

WARNING:

Shielded wires or wires in metal conduits, casings, 

metalized walls, or thick, dense walls may not be 

detected. 

Содержание CMHT77621

Страница 1: ...CMHT77620 CMHT77621 User Manual E PT ES F Please read these instructions before operating the product www CRAFTSMAN com AC ...

Страница 2: ...A 1 3 2 4 5 7 6 Figures 2 AC AC AC AC ...

Страница 3: ...B 3 _ _ ...

Страница 4: ...C D AC Figures 4 AC ...

Страница 5: ...erate injury NOTICE Indicates a practice not related to personal injury which if not avoided may result in property damage If you have any questions or comments about this or any CRAFTSMAN tool go to http www CRAFTSMAN com WARNING Read and understand all instructions Failure to follow the warnings and instructions in this manual may result in serious personal injury SAVE THESE INSTRUCTIONS WARNING...

Страница 6: ...stalling AAA Batteries Load two new AAA batteries in the CMHT77620 CMHT77621 stud sensor 1 On the bottom of the laser lift up the latch Figure B 1 to unlock the battery compartment cover 2 Move the cover upward Figure B 2 and remove it once it separates from the stud sensor 3 Insert two new high quality AAA batteries making sure to position the and ends of each battery as noted inside the battery ...

Страница 7: ...ly place the stud sensor flat against the wall and parallel to a door or window on the same wall which give you an indication of how the studs are positioned behind the wall 3 Without moving the stud sensor press and hold until all the LEDs except the green Power LED turn off 1 sec 4 While still pressing SLOWLY move the stud sensor to the left or the right on the wall 5 As you move the stud sensor...

Страница 8: ... stud sensor SLOWLY against the wall Make sure the wall is not too thick CMHT77620 can be used on walls 75 19mm thick and CMHT77621 can be used on walls 1 5 38mm thick Make sure the wall has a smooth surface Make sure the temperature is within the specified Operating Range and Relative Humidity Service and Repairs Note Disassembling the tool will void all warranties on the product To assure produc...

Страница 9: ... 3 4 12 7mm 19mm thick drywall 1 4 6 4mm under 1 2 1 5 12 7mm 38mm thick drywall Accuracy Center of Metal stud 1 4 6 4mm under 1 2 3 4 12 7mm 19mm thick drywall 1 4 6 4mm under 1 2 1 5 12 7mm 38mm thick drywall Power Source 2 AAA 1 5V size batteries 3V DC Battery Life 20 hrs of continual use at 2 4V 0 3V Power LED will flash to indicate low battery Automatic Calibration Yes Automatic Shutoff when ...

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