Primary Function: Ultrasonic Distance Area and Volume Laser Measurement Device Maximum / Minimum Distance: 0.5M to 18 meters Accuracy: +/-0.5 % Working Temperature: 32 F to 109.4 F Laser: Class II Laser Product Output: 1mw Power Source: 1 x 9V Battery Main product dimensions: 155mm X 70mm X 32mm (L X W X D) Main product weight: 102gm Package Details: Ultrasonic Distance, Area and Volume Measurer Instruction Manual - English Ordering from PlusBuyer provides you with the following benefits: Orders processed and shipped within 24-hours 12 month warranty In-house QC Member discounts Award winning customer support Quantity order discounts Worldwide Shipping Certification: CE, FCC, RoHS