... ,Weatherproof 4,3 kilometers walktalk Building/Hospital Long range real time security monitoring system HUA- ... .HUA-101 G have traditional loud radio voice ,long distance, easy to operate, durable .and combining with ... year, real-time display of power data, prompt alarm under low power.6. Storage: 3, 000 records ... tiny size, loud voice, the bodily call distance, very high ratio of performance and price and ...