Feature: 1. Accurate Positioning: Highly accurate and fast receiving GPS positioning, sending AIS positioning data in real time. 2. Battery Information: Large capacity battery is rechargeable, thoughtful charging indication, real time power information send, and the power status of the net position meter can be displayed on the AIS receiver. 3. Advantages: Widely used for search, anti collision and other purposes, and has high power transmission long communication distance. 4. Unique Design: AIS signal transmission time interval can be configured to 0.5 minutes ‑ 10 minutes. Compact size, easy to install, convenient to operate. 5. Excellent Performance: Professional manufacturing, exquisite workmanship, high accuracy, stable performance and high reliability. Specification: Item Type: Fishing GPS Positioning TrackerMaterial: ABSFrequency: 161.975MHz/ 162.025MHz Bandwidth: 25 KHZ Frequency Interval: 25kHz Modulation Mode: GMSK Transmission Power: 5W .Emission Current: ≤1.5A Built in Battery: Lithium ion battery (DC7.4V), 3000mAh Operating Voltage: DC 7.4VOperating Temperature: -20℃-+60℃ Communication range: approximately 10 nautical miles GPS Data update time (adjustable) : 1 to 30 minutes, 2 minutes by default Standby Time: ≥15 days Plug Specification: US standard, 100V-240V Power On and Off Instructions. Power on: Rotate the power switch to on position, the red and green indicator light will be lit for 2 seconds and then go off, enter normal working state Shutdown: Rotate the power switch to the off position and enter the shutdown state Battery Charging Instructions: 1. Before use, the battery should be charged first 2. Plug the power adapter into the AC power output socket 3. Unscrew the transparent bottom cover under the net position meter 4. Remove the plug of the charging port on the panel of the net position meter, plug the output terminal of the power adapter into the charging port and start charging, the red light is always on during the charging process 5. When the battery is full, light up the yellow light. Charging time is about 4 - 5 hours. 6. After finishing charging, the transparent bottom cover should be screwed tightly to ensure waterproof Notice: 1. When charging, please turn the power switch to off state 2. Short circuit charging is not allowed3. Please use the special power adapter (output DC9.2V/1A ), otherwise the machine may be burned Working Indicator Light Description Green Light is Always On: GPS positioning is in progress, and the power is higher than 7.0V Green Light Blinking: GPS positioning is in progress, the power is lower than 7.0V, please pay attention to charging the device in time Red Light is On: Entering AIS signal transmitting state Green Light and Red Light: Light up at the same time, initialize the power on Package List: 1 x Marine Locator Buoy Tracker1 x Antenna1 x Charger Note: 1. GPS green light is always on, if the positioning status lasts more than 90 seconds, the GPS is working abnormally, please check whether the GPS receiving signal in the environment is affected by the blocking object, for example: the net position meter is placed indoors.2. Lengthen the transmitting interval time can effectively increase the standby time of the machine, users can contact the dealer to set it according to their needs.3. When tightening the transparent bottom cover, pay attention to the force of tightening.4. If you find that the silicone waterproof ring is aging or damaged, please contact the dealer to replace it in time.