Black Box Locator Prevent Loss for Phantom

Product description: When the Phantom 3 next throw fly situation, issued a directive to this device by using a mobile phone, locate where the aircraft back to the phone. Finding missing aircraft by mobile picture where accuracy + -50 meters Charge for half an hour 2-3 days Product List: GPS black boxes, mounting bracket. Including two special screws. Weight: bracket + black box = 30g Product Accuracy: + --50 meters (base station positioning) Product Operation Instructions : 1. Default format: The basic format of sending short messages is numbers. 2. When you turn on the machine, insert the GSM card into the SIM card slot where the black box is. Then the green light will be on for six seconds before it goes out. This means the product enters the normal working condition. If you need the camera function, just insert the TF card that is used for storage into the TF card slot (The TF card can support 8G at most). To turn off the machine, just take the GSM card out of the machine. 3. To s