... received is exactly what has been transmitted, suitable for any standard or non-standard user protocols; *SMT techniques ... meter reading(AMR); * Environment monitor system; * Wireless electronic display screen; * Wireless smart terminal: POS, PDA, PTZ; * RS- ... 485 wire multi-drop system changeover wireless system; * Industrial Automation, PLC Control, Wireless Data Acquisition, SCADA; * Range: ≤8Km ...