MB7389 analog voltage

MB7389 analog voltage

 print_data();
 delay(1000);
}/* Arduino example code for MaxBotix MB7389 HRXL-MaxSonar-WR weather resistant ultrasonic distance sensor: analog voltage output. More info: www.makerguides.com */
 
#define sensorPin A0
 
int distance = 0;
 
void setup() {
 Serial.begin(9600);
}
 
void read_sensor() {
 distance = analogRead(sensorPin) * 5;
}
 
void print_data() {
 Serial.print("distance = ");
 Serial.print(distance);
 Serial.println(" mm");
}
 
void loop() {
 read_sensor();
 

HI this sensor working normally? Or have a variable meansuring? I'm using one but have a lof of disturb and change de value, but the object keep in same distance, I'm looking for other type of sensor for can try end my project, can you help me? Do you recomend this sensor?