Users often consult that real-time transmission of weighing data to the computer is required at the experimental site, and there is a 3-meter-long data transmission line between the weighing instrument and the computer. Due to the frequent movement of the computer required for the experiment, the data transmission line was torn and the data transmission failed. Can the data from an electronic balance be wirelessly transmitted to a computer? This kind of problem can be solved. Replace the wired data transmission between the weighing instrument and the computer with wireless transmission. Stable transmission, with a transmission distance of about 20 meters, capable of passing through obstacles for transmission. The solution is to use a wireless Bluetooth transmission module. As long as the electronic balance has a 232 interface, the wireless Bluetooth transmission module is plug and play and can be installed without a driver. The computer can be powered from an external source to a direct USB source, and is compatible with mainstream operating systems currently available on the market.