The Wi.232FHSS-25-R module combines a state-of-the art low power wireless transceiver with a powerful multipoint-to-multipoint protocol controller to form a complete wireless communication solution. With a simple UART interface, a 120dB link budget, and very low power operation modes, the Wi.232FHSS-25-R module is excellent for Automatic Meter Reading (AMR), RFID, medical, gas and oil sensing and controls, building and machine automation, home automation, security, and other wire replacement applications. Ranges from ½ mile to 2 miles light of sight and and long battery life.

The module can operate as a transparent wire replacement solution; it can also operate in a peer-to-peer networked mode that supports node addressing and assured delivery. The module is designed to be totally transparent. Data is validated using an internally generated CRC-16 and encoded using a proprietary Frequency Hopping Spread Spectrum (FHSS) algorithm. Multiple modules can operate on the same channel because of the built-in carrier-sense-multiple-access (CSMA) protocol.

A wide range of data rates can be supported, allowing the designer to tune the module's performance to meet the application's throughput and range requirements. The RF data rate is programmed to optimally match the UART data rate, which can be programmed from 2.4 to 115.2 kbit/second. The maximum RF data rate is 152.34kbit/second.

The Wi.232FHSS-25-R module employs frequency hopping spread spectrum modulation. There are twenty-six separate hopping channels in a hopping table, and the designer can program the module to use one of six hopping table. These techniques allow the Wi.232FHSS-25-R to operate co-located networks without interference. The Wi.232FHSS-25-R is a very cost effective solution for any wireless application where range, cost, size, and power consumption are key design issues.

FCC approved versions, Wi.232FHSS-25-FCC-RA-R and Wi.232FHSS-25-FCC-ST-R are available and are pin compatible with the Wi.232FHSS-25-EVM-R evaluation modules for quick implementation in a production design. A full line of FCC and standard polarity antennas are available to support the modules. The Wi.232FHSS-25-R module is designed to work communicate transparently with its higher output 250mW sister, Wi.232FHSS-250-R.