These are definitely requirements of cell phone jammer

The quality control conforms to the technical standards of cell phone jammer .
Both master releases the SDA data line, the controller in the ninth SCL pulse during the next pull down the SDA data line to indicate the response. Then is the master to send data to the controller (write the passive controller) or the receiver was controller to send data (read controller), the last stop signal to notify the controller to the end of the entire issued by the master data transfer process. 12C bus protocol provides data transfer length is 8, and each with different rules in the transmitted data bytes, and byte address. Programmable devices often need to pass command to determine the next data transfer operation. Master, including the mode of operation from the controller. These are definitely requirements of cell phone jammer .
Byte write, page write, read now, choose to read continuous read a variety of circumstances. Byte write mode the master sends a start signal from the device address, then send written to the byte address, and then send the write data, and finally send stop signal to complete a write operation; page write mode and byte write mode the difference between just after the byte write a data is not sent immediately to stop the signal, but consecutive to send a data (the provisions of a 16 bytes) and then stopped; in read mode immediately from the device receiving the address +1 to the master transmits device address immediately after the last read / write unit content sent to the data line, the master device to receive 8 data, no loopback response. They are the contract and agreement of cell phone jammer .
But direct feedback to a stop signal to complete a read operation immediately; select the read mode, the master device first sends a start signal from the device address, the last read data; continuous mode immediately read or choose to read the expansion perform an immediate read or read operation to obtain a byte of data, the master device is not back to back an acknowledge bit stop signal, but more data are needed to represent the master, and then ordered from the device to follow-up word section to send data to the data line, the 12C bus control process CPU in the phone until you receive a stop signal given by the master device on the control of the control object. The quality requirement of cell phone jammer put forward by the mandatory standard.The portable cell phone jammer should not be in contact with the salt fog