Wireless Transceiver with RS-232 Interface for OMWT Series Transmitters/General Purpose Radio Modem


Wireless Transceiver with RS-232 Interface for OMWT Series Transmitters/General Purpose Radio Modem | OMWT-XREC-SER-900

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  • Built-in 900 MHz or 2.4 GHz Frequency Hopping Radio for Long-Range Wireless Interface
  • Receives Data from OMWT-REP Wireless Repeater, Data Can be Displayed and Logged Using OMWT-SOFT Software
  • Can also be Used as a General Purpose Radio Modem in SCADA Applications


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The OMWT-XREC-SER Wireless Transceiver is a general purpose compact data transceiver perfect for those needing high performance and dependable operation. Its wireless modem transfers data at 9600 baud up to 1/4 mile in a city environment with 1/2 wave antenna or greater than 10 miles line-of-sight with a YAGI directional antenna.

It is ideally suited for applications in supervisory control and data acquisition (SCADA), remote meter reading, home automation, security, instrument monitoring, point of sale systems (POS) and myriad other applications.

Transceiver modules have built-in support for multi-drop networking protocols. Multiple independent networks can operate in the same vicinity by using distinct network identifiers.

The radios integrate quickly and seamlessly into any new or existing design. Simply output serial data from a micro-controller or RS-232 port into the radio to send FCC approved, frequency hopping spread spectrum data through the air and capture it on all receivers within range on the same network. The system behaves as a virtual half-duplex parallel-wired network. The OMWT-XREC-SER-900 wireless transmitter is supplied standard with a 1/2 wave monopole antenna. For longer distance outdoor use, optional Omni-Directional and YAGI directional line-of-site antennas are available.

Used with OMWT Wireless Transmitters
When used in conjunction with the OMWT series wireless transmitters and OMWT-REP repeater, process data from the wireless transmitter may be sent up to 20 miles(with appropriate antenna).

Transmission Distances with Various Antennas
Indoors(with 1/2 wave antenna, conditions allowing) up to 1500ft(900MHz); up to 600ft(2.4GHz)
Outdoors(with Dipole antenna, conditions allowing) up to 7 mi(900Mhz); up to 3 mi(2.4GHz)
Outdoors(with Yagi antenna, conditions allowing) up to 20 mi(900Mhz); up to 10 mi(2.4GHz)

Frequency Range: 900 MHz unlicensed ISM band
Type: Frequency hopping spread spectrum transceiver
Frequency Control: Direct FM
Transport Protocol: Various monitoring and addressing modes Channel Capacity:
hops through 25 channels, 7 different hop sequences and 65,000 network identifiers
Serial Data Interface: Asynchronous CMOS (TTL) signals, 5 V levels
Serial Interface Baud Rate (from serial port on transceiver to host computer):
Configurable from 2400 to 57600 baud
Data Throughput (radio to radio): 9600 baud
Network Topology:
point–multipoint, point-to-point multi-drop via transparent networking
Channel Data Rate: 10K bps at 9600 baud (the half-duplex transmission of the OMWT-XRECSER
can sustain a continuous data stream at 9600 baud data rate)
Transmit Power Output: 100 mW
Rx Sensitivity: -110 dBm
Transceiver Range Indoor (with standard 1/2 wave monopole antenna):
180 to 396 m (600 to 1300'), 900 MHz
Transceiver Range Outdoor (with optional Omni-Directional Antenna): Up to 7 mi (11 km), 900 MHz
Transceiver Range Outdoor (with optional YAGI antenna): Up to 20 mi (32 km), 900 MHz
Interface Rejection: 70 dB at pager and cellular phone frequencies
Power: 6 to 24 Vdc, 200 mA
Operating Temperature: 0 to 70°C (32 to 158°F)
Storage Temperature: 0 to 70°C (32 to 158°F)
Humidity: 10 to 90% RH non-condensing
Dimensions (without antenna): 70 H x 127 W x 35 mm D (2.75 x 5.00 x 1.375")
Weight: 142 g (5 oz)
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