1. On-board MAX485 chip, suitable for RS-485 communication, low power consumption, limited swing rate transceiver
2. 5.08 (mm) pitch 2P terminal block on board, convenient RS-485 communication wiring
3. Chip all the pins have been cited, you can control the operation through the microcontroller
4. Operating voltage: 5V
5. Weight: about 4.2 g
6. Board size: about 5.5 x 2.5 cm