1.Change the RS-232 dates into RS-485.
2.Asynchronous transmission, point-to-point or point to more, transmit in two way.
3.Transmission velocity of 500,000bps.
4.Power from clusters of mouth, don't need additional one more points environment. which is up to 32 points or 128 points.
5.1500 meter transmitting distance (100Kbps).
6.Join by DB-9 type clusters of mouths, with pocket binding posts.
7.RS-232 end adopts three line system without RTS control.
8.Far transmitting distance with high speed and stable performance, etc.
9.Applicable for attendance machine, IC card charging system.
10.Competitive for both price and performance.