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2)Wood detection

Step 1: Take sample of the wall material
Press the unit against the wall. Long press ZOOM button. The 

green light would be on. “ZOOM” signal and the triangular signal 
would disappear on screen. Signal bar and “AUTOCAL √” sign 

would appear on the screen. 
Step 2: Locate the center of wood stud 

 Keep pressing the unit against the wall and holding the ZOOM 

   button. Slide the unit slowly in one direction. When wood object is 

   located within the detection range (20mm max), the red light 

   would be on and the detector sounds an alarm. The unit would 
   also display the detected signal on screen. The closer the unit 
   gets to the edge of wood stud, the stronger the signal. Mark at 
   the groove spot when the signal reaches its highest level. 

 Move the detector in reverse direction and use the same method 

   to locate the other edge of the wood stud. Mark at the groove 
   spot when the signal reaches its highest level. The midpoint of the 
   two markers is the center of wood stud.
Step 3: Confirm the location
If by chance the product is placed over a wood stud when taking 
sample, the unit will not work properly and the result could be 
faulty. To confirm the finding, select a different location to take 
sample (on the left or right side of the previous sampling point). 
Use the same detection method and see if you can get the same 
result.

3)AC wire detection

Press the product against the wall. If there is a live wire located 
within the detection range, the detector would sound an alarm if it 

detects an electric field with certain intensity. The approximate 

position of the AC wire would be determined according to the 
strength of AC electric field signal [check figure 3]. If there is no 

EN-6

disturbance coming from other electric fields, the stronger the 
signal, the closer the detector gets to the live wire.

Note:

1. DO NOT place your hand on the wall, which may shield the 
    signal and interfere with detection result.

2. This product could be used to detect AC wire (110V, 50-60Hz). 

    However, the signal would be weaker when the wire is grounded, 
    and thus it would be more difficult to detect AC wire.
3. If the AC wire is connected to working electrical appliances, then 

    it is easy to pinpoint the exact location of AC wire. However, 

    when the wire is buried inside metal surface or damp object, it 
    may not be detected by this product.
4. When detecting a wire, the detection range of the detector would 
    be affected if a ground wire and the wire are connected.
5. 

This product is not for fire walls (with shielded space), walls in 

    shielded room and concrete walls. If you want to locate AC wire 
    behind those types of walls, you need to look for more 
    professional AC wire detector. 

Those types of walls would block 

    detecting signal. So, it is very difficult to find AC wire unless it is 
    very close to the surface. For concrete wall, you could only check 
    whether if a wall outlet is working or not.

Silent mode

A silent mode can be selected if your find the beeping alarm 
annoying. Simply press the mute button. The mute icon would 
appear on screen. 

Maintenance and Cleaning

Clean the detector with dry and soft cloth. Do not clean it with 
detergents or other chemicals. The detector has gone through 
rigorous quality testing prior to delivery. If any non-human failure

Summary of Contents for UT387B

Page 1: ...UT387B Wall Detector User Manual...

Page 2: ...be used to detect metals beams and live wires hidden in the wall including floor and ceiling Please read the manual carefully before use and follow the instructions Our company reserves the right to...

Page 3: ...g Area SENSOR LCD Display Screen Metal Detection Button Mute Button Power Button Battery Cover a b c d e f g h i j k l Battery Level Metal Icon ZOOM Icon AC Electric Field Signal Magnetism Icon Detect...

Page 4: ...are not going to use this product for a long time please remove the battery to avoid damages caused by battery leakage Turn on the product Hold the unit in air without touching other objects and shor...

Page 5: ...is unit against the wall and move slowly in one direction When the metal object located outside the max detection range 80mm the green light would be on and the detector would not beep When metal obje...

Page 6: ...Move the detector in reverse direction and use the same method to locate the other edge of the wood stud Mark at the groove spot when the signal reaches its highest level The midpoint of the two marke...

Page 7: ...nge of the detector would be affected if a ground wire and the wire are connected 5 This product is not for fire walls with shielded space walls in shielded room and concrete walls If you want to loca...

Page 8: ...0 380V 50 60Hz 50mm Wood with a minimum volume of 20cm 16cm 4cm 20mm Operating temperature 0 40 C Storage temperature 10 50 C Temperature for guaranteed precision 18 28 C Humidity 75 Altitude 2000m Po...

Page 9: ...y 6LR61 1 User Manual Warranty Our company provides customers with warranty of 12 months from the date of purchase Contact us For any inquiries or comments concerning our products please send an email...

Page 10: ...MADE IN CHINA Web www suaoki com E mail support suaoki com...

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