product instruction it is a 2-channel transmitter (433.92mhz) and only can be activated by pressing correct password. it can be installed both inside and outside room. the product can ensure the maximum safety because of the changing code for each time. working range can reach...
It is a 2-channel Transmitter (433.92MHz) and only can be activated by pressing correct password. It can be installed both inside and outside room. The product can ensure the maximum safety because of the changing code for each time. Working range...