Features: 1. Split-type design: Split design on GPS antenna and mainframe, make it more suitable for equipment operation and information view 2. Solid &mental body: Metal, durable, shock-resistance, heat-dispersion 3. High-precision positioning: 2-3m 4. Photoelectric isolated transmission: Photoelectric isolation technology improves interference prevention from computer: RS-485 remote transmission 5. Power supply: 8-36V wide range power supply, adapting voltage instability on board.