The valid blocking range of cell phone jammer .

When the reed switch is damaged, the phone there will be some very complex fault, as some or all of the key failures, power difficulties, does not display. Therefore boot difficulties in the maintenance of cell phone, keys out, does not display fault, not forget to check the reed switch. The role of the Hawk sensors and reed switches, the working principle is very similar in the magnetic field to produce the pass off. Hawk sensor is an electronic component, and its appearance package is very similar to the transistor, the pin arrangement shown in Figure 2-8. Its internal principles of the structure shown in Figure 2-9. By Hawke components, amplifier, Schmidt circuit and open-collector output transistor. The customer has to consider the valid blocking range of cell phone jammer .
When the magnetic field components Hawke generate a tiny voltage to the amplifier and the Schmitt circuit, the transistor turns on output low; when no magnetic field effect transistor cut-off, the output is high. Relative to the reed switch sensor Hawke longer life, difficult to damage. And vibration, acceleration insensitive. The role of faster switching time is generally 0.1 ~ 2ms, compared with dry reed pipe 1 ~ 3ms faster. Ericsson T28 mobile phone is the application of this switching of electronic components as a flip switch, and its working principle is shown in Figure 2-10. N600 V630 and V631 for the switch-type Hall sensor; figure for the power switch control tube, the conduction D600 output by the microprocessor HALL signal control.  cell phone jammer  should be maintained well like other electronic products.
Power from the battery voltage. When the flip is closed, the cover in the Field of Hawk sensor N600 Hawk sensor circuit of the transistor conduction from the sensor pin output low. During a call, they hang up signal sent to the microprocessor hang up. When opening the flip, the Hawk sensor is not sensitive to magnetic fields, Hawk sensor circuit transistor cut-off, the output level is high, if the signal is generated when the incoming call, transmission to the microprocessor, the CPU answer the call as the signal of the hook; single flip open, the high signal from the microprocessor as a backlight control signal so that the background lights up.  cell phone jammer  can be used to jam almost all signals.
HALL signal when the signal is high, the switch V630 and V631 Dentsu Hawk sensor provides power, if you open or close the fold, the the Hawke sensor will output switching signal to control the phone. When the phone is set only key response, micro-processing along the D600 output HALL-level signal is low, so that the switch V630 and V631 deadline, the Hawke sensor power supply, with or without magnetic field output the voltage does not change, loss of the switch. Electro-acoustic and electric components. Electro-acoustic device to convert electrical signals to sound signals or sound signals into electrical signal device. Including the speaker, ringer, headset, mouthpiece, etc.. Some other wireless signals are blocked by  phone jammer.