Ready to install battery

Your rangefinder needs a 12V battery. To better use and extend life, we recommend that you use alkaline batteries.
Please install the battery according to the following steps:
1. Follow the direction of the battery room arrow;
2. The cover is pushed off and the battery room has positive and negative (+ and -) poles.
3. Open the lid
4. Replace the battery when the battery is low or the rangefinder cannot run.

Warning: if it is a month or more than a month, please take out the battery, so that the battery will not be used for a long time.

Stabilization of rangefinder:
This instrument is sensitive to temperature and humidity. Before use, wait 15 to 30 minutes until the range stabilizer is stable to room temperature.

The unit of measurement is feet and meters.
Accuracy: 0.005+1.
Frequency: 40 KHZ.
Measuring range: 0.55 to 18 m.
Typical specifications are subject to change. Specifications are subject to change without prior notice.

 Ultrasonic rangefinder is completely suitable for a family to decorate, buy air conditioning calculation area of volume, real estate agents or required by the construction workers, need of fast measuring tool room and room area, ultrasonic range finder to measure the linear distance from 0.50 M to 180 M, ultrasonic range finder is using ultrasonic to the object under test, and then calculating the distance between the ultrasonic round-trip time to determine the measurement.

Reference parameters:

Measuring range: 55 cm to 20 m.
Error: five thousandths.
Resolution :0.01 m.
Maximum measurement distance :20 m.
Maximum distance :200.00 m.
12 v battery:
Transmission frequency: 40kHz.
Accuracy: + 0.5%
Resolution: 0.01m.
Working temperature: 0 ° C ~ 43 ° C

Product introduction:

The ultrasonic rangefinder is called \"electronic tape measure\" in foreign countries. It is suitable for the construction, decoration, engineering and other places, and can achieve the measurement of traditional tape measure. Our shop sales of ultrasonic range finder according to data provided by the manufacturer is currently on the international performance better products, and relatively high market share in Europe and the United States, compared to other brands of rangefinder on ultrasonic launch Angle and anti-interference treatment had significantly difference.

 The infrared rangefinder ultrasonic range finder is very convenient.

Matters needing attention during measurement:

1. Ultrasonic range finder test is an obstacle at the bottom of the machine, rather than at the top of the distance, if will be subject to the top, you will find that shows distance and the actual distance always there are so few 10 cm of error, ha ha.

2. The measurement time is as vertical as possible with the wall, especially when the measured distance is far away. The more vertical the measurement is, the higher the accuracy of the measurement data is, and the larger the deviation is, the greater the error is. For long distance measurements, it is recommended to use laser positioning to try to stay vertical.

 Note:

Laser emission 650 nautical miles is the visible laser wavelength.
Don't stare at a laser beam, or shoot anyone with a laser.