Multi-Channel Radio Modem Transmitter & Receivers from Radiometrix,

Unlike raw FM radio module alternatives, these modules take care of preamble, synchronisation, bit balancing, error checking, and noise squelching, as well as all transmit timing, valid data identification and datastream buffering activities. This allows a data link to set be set up with the minimum of engineering effort. Each module can be assigned 1 of 8 unique addresses, so that a multiple radio link network can be established, provided no two modules are attempting to transmit at the same time on same channel.

The transmitter has an output power of 10 dBm (10 mW), while the receiver has a sensitivity of -107 dBm. The modules require a 5 V power supply, drawing just 28 mA for transmitting and 22mA for receiving. They have an operating temperature range of -20 °C to +70 °C.

Both the transmitter and receiver comply with EN 300 220-2 and EN 301 489-3 standards. Key applications for these modules include handheld/portable terminals, industrial/commercial telemetry systems, data loggers, and in-building environmental monitoring systems.