Please according to the following steps to install batteries:
1. The battery compartment according to the direction of the arrow to put;
2. Cover is pushing slides open, battery room have positive and negative (+ and-poles.
3. Open the lid
4. When showing low power or ranger doesn▽t work, please replace the it.

Ranger switch:
To open this instrument, please press "MEASURER" even in dim light can easily be screens, such as the voltage stability, can see at that time, the environment temperature. 30 seconds if will not automatically shut off.

When measuring the:
1. Please click the "MEASURE", this instrument will MEASURE the instrument to radar to the other end of the measurement.
2. Make the bottom of the instrument near the wall, ceiling is probably the distance to the floor. Make sure that you do not have between the distance measurement obstacles, your head or your hands in the front of the measurement instrument is not.
3. Repeat press "FEET" or "METER", "FEET" said to FEET measurement, or appear "METER" said to m measurement.

Description

Here are professional measuring instrument！

Ultrasonic apparatus is completely suitable for a family to decorate, buy air conditioning calculation area of volume, real estate agent orconstruction workers must, need room and room area is fast measurement tools, ultrasonic apparatus that can measure straight distance from 0.50 M to 18 M. (1.5 feet-60 feet) ultrasonic apparatus is using emit ultrasonic to object to be tested, then the ultrasonic time to determine from the distance is measured.

FEATURES

New and high quality
Lcd with backlight
Area, Volume, Addition,Subtraction Calculation
Measure Distance From 5 Feet TO 60 Feet

Specifications

Condition	New
Measuring scope	50 centimeters to 18 m
Error	five over one thousand
The sum of the maximum distance	180.00 m
The biggest calculation area	18 x 18 square metre
The biggest volume calculation	1800.0 cubic meters
Resolution	0.01 M or 0.5 Inch
Accuracy	0.5% +1 digit(2~60ft)
Power	1 x 9V battery(Not Included)
Working Frequency	40kHz
Working Temperature	32▲F to 109.4▲F(0▲C to 50▲C)
Color	Yellow & Black

Package Includes

1 x Multifunction Ultrasonic Distance Measurer Laser Point
1 x User Manual

Extra Info

Reduce the measurement error:
1. According to these steps with "measure" to measure a size
2. Click "STORE" button, you can put the measurement data stored in the memory card M1 and M2 or M3 card face.
3. If necessary, just repeat the first and the second step to store data.
4. If you want to store data on which memory card, press the M1 and M2 or M3 card. Such data has it.
5. If you want to store the new data, it would direct the original data deleted.
6. If you want to delete ALL the data of words, then click "ALL MEMORY CLEAR" hold 3 seconds, and then ALL of the data and M1 and M2, such as M3 will temporarily disappeared.