AR851 Ultrasonic Range Finder
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- Pick up from the Safestallbd Store
House - 11 (2ndfloor), Road - 16, Sector - 11, Uttara, Dhaka 1230
Free
- Steadfast Courier Delivery
Steadfast courier will deliver to the specified address
Inside Dhaka - (24hours) - 70 TK, Outside Dhaka -(48hours) - 130 TK
- Pathao Courier Delivery
Pathao courier will deliver your products to the specific address
Inside Dhaka - (24hours) - 70 TK, Outside Dhaka - (2-3 Days) - 130 TK
- Sundarban Courier Delivery
Sundarban courier will deliver to the specified address
Inside Dhaka - (24hours) - 80 TK, Outside Dhaka - (48hours) - 150 TK
- Warranty 1 year
- Free 7-Day Returns
Available Payment Methods:

Why use AR851 Ultrasonic Range Finder ?
AR851 Ultrasonic Range Finder uses advanced ultrasonic technology to accurately measure distances by emitting high-frequency sound waves and analyzing the echo. With both single-unit and double-unit modes, this device offers precise measurements up to 60 meters (197 feet)—perfect for use in construction, interior design, and real estate surveying.
Equipped with multiple measurement functions including length, area, and volume, it’s an ideal tool for professionals seeking convenience, speed, and reliability in one compact device.
📏 Key Features
Wide Measuring Range
Single-unit mode: 0.5 – 20m (20in – 65ft)
Double-unit mode: 1.0 – 60m (36in – 197ft)
High Accuracy
±1% measurement accuracy with 1cm resolutionMultiple Measurement Modes
Measures length, area, and volumeUser-Friendly Display
Includes backlight selection for better visibility in low-light conditionsData Management
Stores and recalls up to 5 measurementsAdditional Functions
Continuous measuring
Measurement benchmark setup
Sum of length calculation
Low battery indication
Auto/manual power off
🛠️ Technical Specifications
Feature | Specification |
---|---|
Working Principle | Ultrasonic |
Measuring Range | 0.5–20m (single) / 1.0–60m (double) |
Accuracy | ±1% |
Resolution | 1 cm |
Units | Imperial & Metric |
Functions | Length, Area, Volume |
Data Storage | 5 Groups |
Power Features | Auto/Manual Power Off |
Backlight Display | Yes |
Low Battery Indication | Yes |
Operating Temperature | 0°C ~ 40°C |
Operating Humidity | 30–70% RH |
Continuous Measuring | Yes |
Benchmark Setup | Yes |
Sum of Length | Yes |
🧭 Applications
Room and building measurements
Interior design and furniture layout
Property surveying
DIY home projects