All of the components including handset telephone receiver and transmitteri??keypadi??buzzeri??circuit board and cabinet are designed to be multii??layer waterproof and dusti??proof which is up to Class III grade. The whole machine is up to national standard GB4208-93 IP 66.

In addition to regular telephones it also have functions PA function : When the environment noise exceeded 90 decibels, The regular telephones ringing often can not allow staff heard the bell, lead to the production scheduling order could not be conveyed in a timely manner, resulting in economic losses. KNSP-08 and vibration tones amplified through loudspeakers broadcast. Meanwhile right ring count, after several rang after the (factory set to 5) of the Automatic Abstract Machine, Calling Call before broadcasting their voices to the passage of the machine near the loudspeakers to broadcast the work and maintenance personnel.