... ,justice,tourism,medical care and so on. 3. Operation instruction a.Power on With the system off,hold down the ... used to record voice) c. Taking photo With the system on standby,you can take one photo by each ... the system enters standby. h. Power off With the system on standby,it can be turned off by a ... red indicator turns off at the same time.With the system on standby, If no any operation,the system ...