| Code | Description |
 | OBRF232-2 | External 868 MHz radio module with ABS box and cable l=3m. Fitted with DB9 connector and external power adapter. Max. functioning distance, in appropriate environmental and installation conditions: 70m indoors, 150m outdoors. 50 configurable channels. (OBRF232 must be combined with another radio module). |
 | OBRF-2 | External 868 MHz radio module, cable l=3m. ABS IP65 protecting box, 3 m cable, power supply from weight indicator. Max. distance, in appropriate environmental and installation conditions: 70m indoors, 150m outdoors. 50 configurable channels. |
 | OBRFUSB-3 | External 868 MHz radio frequency module, USB cable l=1m. Power supply directly from the USB port. Max. functioning distance, in appropriate environmental and installation conditions: 70m indoors, 150m outdoors. 50 configurable channels. |