Features:
LCD with Backlight.
Your distance measurer transmits ultrasonic waves to a point you want to measure.
Auto OFF: switches off if you do not press any key for about 1 min.
It measures the time taken by the waves to reflect and then calculates and re-transcribes the distance.
Level function(one vertical level bubble， one horizontal level bubble).

Specifications: 
Material: ABS
Color: Yellow
Model: CP-3010
Measurement range: 0.55-18m
Units of measurement: Feet / Meter
Accuracy: ±0.5% ±1cm
Working Temperature: 32°F to 109.4°F(0-43)
Working Frequency: 40kHz
Power supply: 1 * 23A 12V Alkaline battery (not included)
Size: 8 * 7.2 * 4cm 
Net weight: 68g

Package includes:
1 * Ultrasonic Rangefinder(include 1 battery)