1 RS422 interface, two-way communication. B Y Z A ultra far transmission 1000 meters
The 2 module has ESD 15KV protection.
3 on board to increase the limit of 10 ohm current limiting current protection.
4 module with TVS diode. Anti lightning, peak voltage.
The 5 module has 120 ohm termination resistors, which can effectively reduce the interference of long range communication.
6 have the power indicator light and the data receiving and sending indicator light. Panoramic view of state data.
7 module TTL side using 5V DC power supply TXD RXD compatible with 5V logic signal.
8 module uses the original imported MAX490 chips, stability and communication speed is far more than domestic products, up to 2.5MBPS.
9 module size: 5.0cm*2.7cm