To come up against an electric cable while drilling a hole in a wall can have catastrophic consequences.
Likewise, drilling into gas, water or central heating pipes can be
extremely hazardous. With a handy metal detector it can now be
determined beforehand whether there are metal objects to be found in a
wall, ceiling or floor.
An LED indicates
if a metal object is in the vicinity. If an audio signal is also
desired, space has been provided on the PCB for a buzzer ( type like SV4/12-S ) to be connected
The PCB has been specially constructed to fit entirely into to the separately available box.
- Metal detecting distance adjustable: up to 8cm (3.15")
- Power supply: 9V battery (not incl.)
- Dimensions: 56 x 64mm (2.2" x 2.5")
If you experience difficulties with the calibration of the unit (I.E. if
the LED doesn't turn off, when there isn't any metal present ), replace
C1 with a ceramic 1.2nF (122) capacitor. This behaviour is due to a
spread on the component values and differences created when winding the
�metal detecting distance adjustable: up to 3.15"
�power supply: 9V battery (not incl.)
�12VDC-buzzer connection (buzzer not included)
�dimensions: 2.2" x 2.5"