Máy Đo Khoảng Cách Bằng Sóng Siêu Âm Màn Hình Lcd 18m

Features:
Level: Accurate level, more convenient and quick to use.
LCD Screen: Large LCD screen, so that you read and write more convenient.
Lightweight: This product is light, easy to carry and can be operated with one hand.
Ultrasonic Launching Port: Ultrasonic launching port can be measured at a long distance.
Widely Used: Widely used in building construction, topographic survey, land survey, mine survey and so on.
Two Units: The initial default unit is metric. Press "FT/M" to switch to metric.
Warning: The rangefinder emits a visible light with a wavelength of 650nm.
Do not look directly at the beam and do not point it at other people's eyes.
 
Specifications:
Type: Distance Meter
Material: ABS
Color: Yellow
Size (L*W*H): About 70x40x40mm/2.76x1.57x1.57inch
Measurement Range: 0.5~18m/1.5~60ft
Error: 5 ‰
Resolution: 0.01 m
Power Supply: 12V 23A Battery(not included)
Transmission Frequency: 40kHz
Operating Temperature :0~50℃
Install the battery.
1. Slide the battery compartment cover open in the direction of the
2. Insert the battery into the battery compartment in the correct direction according to the positive and negative poles (+/-) indicated in the compartment.
3. Replace the lid.
4. When the warning icon of low battery power appears or the measuring instrument stops working normally, please replace the battery.
Note: If the rangefinder will not be used for a month or more, remove the battery as it may leak chemicals that could damage the internal electronics.
Adapt the rangefinder to its surroundings before use
Your rangefinder is sensitive to ambient temperature and humidity changes. Before you use it, wait about 15-30 minutes for it to settle down to the current room temperature.
Operation
Turn the rangefinder on/off
Press the "Read" key to start the rangefinder. If no key is pressed within 30 seconds, the rangefinder shuts down automatically.
Measurement
1. Press the "Read" key again after powering up, and the distance between the rangefinder and the point being measured will be displayed on the screen.
2. Place the bottom of the rangefinder flat on the wall about the middle of the floor to the ceiling. Make sure there is no barrier between the rangefinder and the point being measured. And make sure your head or hands are out of the way of the rangefinder.
Note:
The results of the measurement will remain displayed for about 30 seconds (or longer if you press other keys during that time).
If you're trying to measure a distance less than 2 feet (0.6 meters) or more than 60 feet (18 meters), an "Error" will appear on the screen.
Package Included:
1pc x Distance Meter
1pc x Manual 
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