1. The onboard MAX485 chip is a low-power, slew rate-limited transceiver for RS-485 communication 2. The board is connected to 5.08 (mm) spacing 2P binding posts, which is convenient for RS-485 communication wiring 3. The pin of the QUAN part of the chip has been led out, and the operation can be controlled by the single chip microcomputer 4. Working voltage: 5V Delivery Quantity: 5pcs, Size: 46(mm)x12(mm) Color: green Kind tips 1. Package content: only the above package content, excluding other products. 2. The size is measured manually, please allow 1-2 cm measurement error 3. Due to different displays and lighting effects, the actual color of the item may be slightly different from the color shown on the picture. Products from LUOLV's store