Беспроводной USB-433/868 / 915MHz Модуль JZ874

JZ874A(B), USB transceiver modules , 1. Ultra low power transmission Transmission power: 500mW(JZ874B), 100mW(JZ874A);High receiving sensitivity: -123dbm, Size: 70mm*45mm*19mm 2. Low power consumption Receiving current<45mA, transmission current<360mA(JZ874B),. <100mA(JZ874A), 3. ISM frequency band, not requiring on application of frequency point Carrier frequency of 428---433MHz,also capable of 868/915MHz. 4. High anti-interference and low BER (Bit error Rate) Based on the GFSK modulation mode, it adopts the efficient communication protocol. 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 transmission distance isBER=10-3/1200bps>3000m(JZ874B) , >800m (JZ874A),when the antenna height is greater than 3m (BER=10-3/9600bps). 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 charge time for receiving and sending <10ms. 7. Multi-channel and speed The standard JZ874 configuration provides 8 channels. to meet the multiple communication combination mode of the users. It has baud rate to be chosen such as 1200bps2400bps4800bps9600bps19200bps38400bps. The wireless transmission rate is direct ratio with baud rate of interface to meet users equipment requirement. 8. High speed wireless communication and Large data buffer When the speed rate in the air is quicker than interfaces, allowing to transmit unlimited length data at one time, when the speed rate is slower or equal the interfaces, allowing the transmission of 255 Bytes long data frames at one time for more flexible programming by users. 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. JZ874 will automatically complete the other operations, 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, so that change the traditional product structure and improve the product reliability. 12. Antenna choose Users can choose various antenna setting project and antenna according to users different need to achieve a optimal effect. 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