Short Range Gold Metal Detector Gems Diamond Finder Handheld DIY Soldering Kit

Description

Description: Metal detector is a high performance metal sensor designed for security.It can also apply to game entertainment,car detection,equipment position detection,metal proximity switch,traffic statistics,etc.. Buzzer start to ring and the red light indicator is on when the metal is close to the metal detector. Easy to install by PCB silk screen and component listing,and we also provide PDF instruction at this page.Simple circuit is easy to assemble and train your soldering skills during assembly process.It is really a funny welding practice for solder beginners! Working Voltage: DC3-5V Detecting Distance: Less than 60mm color:blue material:plastic Package Included: 1/5 Set* Simple Metal Detector The kit is sold in bulk and needs to be welded by the buyer himself.
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Product Description
Description:
Metal detector is a high performance metal sensor designed for security.It can also apply to game entertainment,car detection,equipment position detection,metal proximity switch,traffic statistics,etc..
Buzzer start to ring and the red light indicator is on when the metal is close to the metal detector.
Easy to install by PCB silk screen and component listing,and we also provide PDF instruction at this page.Simple circuit is easy to assemble and train your soldering skills during assembly process.It is really a funny welding practice for solder beginners!
Working Voltage: DC3-5V
Detecting Distance: Less than 60mm
color:blue
material:plastic
Package Included:
1/5 Set* Simple Metal Detector
The kit is sold in bulk and needs to be welded by yourself.
If you need the document link, please contact us.
Instruction：
After installation, connect the power supply, adjust the potentiometer to just stop sounding (when it is not close to the metal).
Let the printed board antenna to approach the metal, at this time it should sound. If it does not stop sound after moving away from the metal, please turn the potentiometer counterclockwise a little bit and try again until it stops sound.
Common problem:
Problem: It makes sound for a long time after power on.
Reason 1: This is because the oscillating stage has not started to vibrate. It is possible that components such as resistors and triodes are misplaced, or there is a short circuit or open circuit in the circuit board coil. Please check it carefully with a magnifying glass.
Reason 2: In addition, the Q2 magnification is too low enough to make Q3 turn off and it will sound for a long time.
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Payment
1.We accept Paypal payment only , you can use credit card through PayPal.
2.Please make payment asap,then we can arrange shipment for you asap.
Shipping
If total amount ≥ 7usd ,we provide a tracking number with
you.
Delivery time
Normally it arrive in 10-30 business days when your order amount is more than 7usd.
And 30-60 days when amount is less than 7usd.
Return Policy
1.All products are eligible for 30-days money back guarantee.
2.All returns should be guided by us, please contact us for detail before you return anything.
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