Беспроводной интерфейс RS232 / RS485 / TTL передатчик и приемник

Technical specification of JZ875:Data Radio Modulator Serial number ItemParameterNote1Modulation modeGFSK2Work frequency400-470MHZ868/915 MHZ is possible3Transmission power2W/1W4Transmitting current<1.5A5Receiving current<50mA6.Sleeping current1uA7Receiving sensitivity-123dbm(1200bps)8Channel amount16 channelUser setting9Working temperature-35-+80°C10Working humidity10% 90%(relative humidity without condensation)11Antenna impedance:5012Power supply+5V13Dimension85mm×54mm×20mmStability of Frequency±5PPM14InterfaceTTL,RS232,RS485user can choose15Reliable transmit distance3-10KmFeatures: 1.Power and receiving sensitivity The most Transmission power of JZ875 is 2W or 1W,The use can set the power according to their request. Power supply:5V.TX current<1.5A,RX current<50m A,Sleep power is<0.1mA. 2. Modulation mode and Frequency Modulation mode:GFSK,The Frequency can be choose from 400 to 470MHZ. The default is 428-436MHZ. 3. Working Temperature. JZ875 is a true Industry Products, it can works from -35 to +80. The stability of Frequency can achieve ±5PPM. 4. High anti- interference and low BER(Bit error Rate) Based on the GFSK modulation mode, the high- efficiency forward error correction channel encoding technology is used to enhance datas resistance to both burst interference and random interference and the actual bit error rate of 10-5 10-6 can be achieved when channel bit error rate is 10-2. 5. Long transmission distance Within the range of visibility, the reliable distance is >3km to 10km when the antenna is higher than 3m. 6. Transparent data transmission Transparent data interface is offered to suit any standard or nonstandard user protocol. Any false data generated in the air can be filtrated automatically (What has been received is exactly what has been transmitted). The change time between receiving and sending is <20s. 7. Multi- channel The standard JZ875 configuration provides 16 channels to meet the multiple communication combination mode of the user. 8. High speed wireless communication and Large data buffer zone When the RF baudrate is bigger than COM baudrate,allowing to transmit unlimited length data at one time,when the RF baudrate is smaller or equal to the COMs,allowing the transmission of 255 Bytes data . 9. Intelligent data control and the user doesnt need to prepare excessive programs Even for semi duplex communication, the user doesnt need to prepare excessive programs, only receiving/transmitting the data from the interface.JZ875 will complete the other operations automatically, such as transmission/receiving conversion in the air,control,etc. 10. High reliability, small and light Single chip radio - frequency integrated circuit and single chip MCU are used for lessened peripheral circuits,high reliability, and low failure rate. 11. Watchdog monitor Watchdog monitors the inner function,it changes the traditional product structure and also improve the reliability of our modules. Application Scopes:* AMR Automatic Meter Reading* Wireless alarm and security systems* Home automation* Low power telemetry* Wireless conference voting system;* Sports training & competition;* Wireless dishes ordering;* Wireless POS, PDA wireless smart terminal;* Electronic bus station and intelligent traffic;* RF transmitter Wireless electronic display screen and queuing machine;* Wireless telemetry charging for parking, parking lot;* Wireless modem Automobile inspection and four-wheel orientation;* Wireless sensor Industrial wireless remote control and air conditioning remote controller;* Observation and predication of oil well and hydrological information; * Point to multi-point wireless network, wireless on-the-spot bus and automatic data collection system