SRWF-508 MODULE

I. MainApplication

SRWF-501, the low-power wireless transceiver data module is used as the wireless data transceiver in short-ranges,with the small size, weight and power consumption and good stability and reliability. Narrowband low power UHF wireless data transmitters and receivers with 25 kHz channel band.

* AMR Automatic Meter Reading.

* Wireless alarm and security systems.

* Home automation.

* Low power telemetry.

* 433 / 868 and 915 MHz ISM/SRD band system.

* Wireless POS, PDA wireless smart terminal.

* RF modem can be used for Electronic bus station and intelligent traffic.

* RF transmitter Wireless electronic display screen and queuing machine.

* Wireless RS232/RS485 conversion/connector.

* Point to multi-point wireless network, wireless on-the-spot bus and automatic data collection system.

II. Module Features

1. Low power transmission
The transmission power is only 24~30dbm
2. ISM frequency band, requiring no application of frequency point.
The carrier frequency is of 433MHz (SRWF-508)
3. 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 data’s 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.
4. Long transmission distance
Within the range of visibility, the reliable transmission distance is >2500 m when the height is greater than 2m (BER=10-2@1200bps,AT-1 antenna).
Within the range of visibility, the reliable transmission distance is >4500 m when the height is greater than 3m (BER=10-2@1200bps,AT-6 antenna).
5. 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).
6. Multi- channel
The standard SRWF-508configuration provides 8 channels. If users need, it can be extended to 16/32 channels in the multiple communication mode.
7. Dual serial port, 3 interface modes
SRWF-508 provides 2 serial ports and 3 interfaces, with COM1 as the TTL level UART interface and COM2 as user defined standard RS - 232/RS - 485 interface (user only needs to plug/pull 1 bit short circuiter and energize it to make the definition).
8. Large data buffer zone
Interface baud rate is 9600bps with format of 8N1/8E1 and user self- definition, allowing the transmission of long data frames at one time for more flexible programming by users. (If users need, it can also transmit the data in unlimited length at one time).
9. Intelligent data control without excessive programs
Even for semi duplex communication, users don’t need to prepare excessive programs, only receiving/transmitting data from the interface. SRWF-501-50 will automatically complete other functions, such as transmission/receiving conversion in the air, control, etc.
10. High reliability, small and light
Radio frequency integrated circuit and MCU are used for lessened peripheral circuits, high reliability, and low failure rate.