The TDM2 is a very simple 433MHz band radio data modem. It provides a medium ranged half duplex, transparent data link between a pair of 9600 baud RS232 ports without any additional interface circuitry
UHF Multi Channel Transparent Data Link Transceiver
The TDL2A is a 9600baud half-duplex multi channel OEM radio modem in BiM2 footprint, operating on European 433MHz ISM band. TLD2A acts as a transparent serial cable to attached host. TDL2A is an intermediate level OEM radio modem.
The TR1M narrow band multi channel transceiver module is intended as a general purpose VHF data communication unit. It is available on any frequency between 135 and 175MHz (in 3MHz bands) and delivers up to 100mW RF output
The TR2M transceiver module offers a low power, reliable data link in an industry-standard pin out and footprint. Two versions are available, covering the 458.5-459.1MHz UK band (at 100mW) and the European 433.05-434.79MHz band (at 10mW).