Features: enhances your maritime navigation with our double channel AIS receiver, featuring high Precisions Map for accurate positioning and real time vessel information, ensuring superior safety on the water. Designed with advanced technology, this marine Map device offers robusts interference resistance, RS232 and RS422 interfaces for seamless data integration, and a user friendly LED display for easy monitoring. Suitable for professional mariners, yacht owners, and small fishing boat operators who prioritize navigation safety and require comprehensive awareness of surrounding vessels. Perfect for various maritime activities such as commercial shipping, recreational yachting, and fishing operations, providing reliable data to avoid collisions and optimize routes. Built to withstand harsh marine environments, this Map unit features waterproof and dustproof construction, low power consumption, and simple installation, making it essential tool for maritime enthusiasts and regulatory bodies. Specifications: Material: plastic Size: about 77x145mm/3.03x5.71inch Power supply: Input 10-35VDC Power consumption: 0.95W Electrical interface: RS232 and RS422 Baud rate: 38400bps Sentence output: gga,gsv, gll. AIS features: Frequency range: 156.025MHZ~ 162.25MHZ AIS Channel 1:CH87B (161.975MHZ) AIS Channel 2:CH88B (162.025MHZ) Receiver Performances: 1. Receiving sensitivity: -118dbm packet error rate <5% Package Includes: 1 set Marine Map Receiver note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the difference between different monitors, the picture may not reflect the actual color of the item.