The company is going to develop more new marketing channels of cell phone jammer

The manager decides to implement the strategy of price-off sales to push the sales of cell phone jammer .
APR9600 voice alarm circuit chip that can use ordinary electret microphone recording, direct drive 8 ~ 16Ω speaker playback, you can "OSCR" side of the resistor setting adjust the length of time sound recording and sound quality, by DIP switch to select the sub-control mode, by setting the DIP switches to select the recording / playback status can be achieved through the start button, loop, stop recording voice and other functions. This part of the action for the entire system core. When the receiver receives the signal to the invasion, because the signal is very weak and mixed interference signals, so the design of a special signal processing circuit (using operational amplifiers, with the peripheral circuit forming a band-pass filter function of the amplifier circuit) isolated signal , and thousands of times magnification; through optimization of design parameters, with the comparator circuit further eliminate interference caused by hot air flow. Then the two amplified signals isolated from the thermal analysis to determine. To prevent malfunction, the signal will be compared to the threshold level to produce high signal output. Finally, the signal generated by the different probe introduced into the single-chip NOR gate the INT1 port, to be interrupted to perform the appropriate action; when not interrupted, the system is in standby mode, which can reduce system power consumption. Circuit structure shown in Figure 2. The company is going to develop more new marketing channels of cell phone jammer .
When the device detects when someone enters a zone where the smart alarm system will sound the alarm by buzzer, while red light diode flashes, played the role of deterring criminals. This design also introduces high-voltage generator, when connected to the relay normally open contact is closed, the secondary output voltage can boost will lead to the alarm of its shell, if the perpetrator intended to destroy alarm device, in contact to its shell, even with gloves, gloves, high-voltage breakdown can be discharged through the body, which will effectively prevent the further crime of criminals, but it will not inflict permanent damage. Microcontroller and TC35 communication, commonly used serial mode 1, the data format is 10 bits. Among them, a start bit (0), 8 data bits (LSB first), 1 stop bit (1) [3]. The baud rate depends on the value of timer T1 overflow rate and the special features of SMOD bit in PCON register value. As the MCU TXD and RXD level to TTL level, and TC35 communicating through RS-232 interface, TTL level and RS-232 levels are not compatible, so the two interfaces, the need for level conversion, in this use the MAX232 chip. The marketing channel of cell phone jammer of the agent is multiple.