At the end of 2013, the 433MHZ wireless communication module WL4432 produced by Shanghai Wansi Electronics Co., Ltd. was successfully sold to Türkiye. The wireless module uses the frequency band 433MHZ, with an unobstructed distance of 500 meters. It is a fully transparent module. Customers only need to connect the TTL/RS232/RS485 interface of the original equipment to the WL4432 to replace wired communication