GPS Handheld Length & Width Area & Fare Me

GPS Handheld Length & Width Area & Fare Measurement InstrumentA new product manufactured by Chinese people; The most accurate measurement device within Chinese market.Product Brief Introduction:GPS Handheld Length & Width Area & Fare Measurement Instrument is a new high-tech product independently researched and developed by our company. It measures the length, width and area of the farm land through satellites, and also has the functions of unit price set and fare calculating. The product has been widely used in many agricultural activities within China for its creative handheld design and high performance and price ratio.Product Main Functions:1. Farmland area measurement; 2. Farmland length and width measurement; 3. Able to set the unit-price from 30 CNY to 200 CNY, having unit-price memory facility; 4. Farmland area date showing in terms of square instrument or acres; 5. Displaying the unit-price and total price; 6. Current satellite signal intensity showing; 7. Current satellite signal positioning precision showing; 8. 2400mAh lithium cell, 2000mAh 2500mAh Ni-MH rechargeable battery and AAA ordinary dry battery as power supply; 9. Charging circuit stetted inside.Product Electronic Characteristics:Operation Voltage 3.3V---5.0V Battery Type 2400mAh lithium cell or AAA dry batery Operation Hour >30 hours Operation Current 300mA Charging Period 6---8 hours Power Consumption 0.2W---0.35WProduct Operation Instruction:Schematic Diagram under Switch-off Regime: 1. On-off Key of the device: push up to turn on the power, push down to turn off the power; 2. Battery Charging Indicator Light: light-on indicates battery charging status, light-off indicates battery charging finished; 3. Battery Charging Interface; 4. Automatic Measurement Button: press to measure farm land of any shape; 5. Reset Button: press to reset the device to task state when the user make sure do not need the data on the LCD any more; 6. Back Light Button: in the view of power saving, we suggest only use the back light during night use; 7. Four-point Measurement Button: we suggest use this measuring method to measure quadrilateral shape farmland; 8. Built-in Satellite Antenna: used to receive satellite signals. During the measurement process, the optimum position of the Built-in Satellite Antenna is horizontal (that is to keep the LCD upward), downward or wide-angle is forbidden.Schematic Diagram under Switch-on Regime:Schematic Diagram under Switch-on Regime (outdoor, within 5 minutes): 9. Current GPS Precision Grade: the user can start his measurement when number 01 or 02 occurred; 10. Current GPS Signal Intensity: normally the device can search the satellite signal within 2 minutes outdoor; 11. Beijing Time; 12. Built-in Battery Electronic Quality Indicator. Schematic Diagram under Switch-on Regime (outdoor, 5 minutes later): 5 minutes later, the device receives the satellite signal. When the signal precision grade is 01 or 02, the “searching the satellite signal” will disappear, and the “A, B, C, D” button will be flashing on the LCD. Then, the device is in the Task State.