I would like to ask help some of the instrument ,machine , device are still using old technology with communication port as RS-485/modbus and others as ethernet/LAN. I would like to ask if there is a network device can convert from RS-485 or ethernet to wireless lan.

The only i know is wifi repeater, but the problem repeater is not allowed in company. Is there any wifi repeater can work as wireless lan only and can disable repeater function.

Or is there any other solution for this.
Thank you mga master.