... range,Modulation:GFSK Meter Reading,data transmitting RF Module, 2W RF Module, Industrial Wireless data collection, 433Mhz: YS-C30 series ... , when antenna is 2m above ground in open area);2. Products Main Features* Carrier frequency: 433/ 450MHz or ... * Automatic meter reading(AMR);* Environment monitor system;*Wireless electronic display screen*Wireless smart terminal: POS, PDA, PTZ;* Electronic bus ...