Water leak alarm work with detecting cable for water leak detection. When detecting cable detect liquid leak, it will trigger alarm and make it send relay signal. To cancel the alarm, simply dry out the cable or switch off the alarm manually. in addtion to water leak detection, the device is also equipped with cable failure alarm. When detecting cable is detached or damaged. There are two types of installation, wall-mount and rail-rack mount for options, depending on applicaiton. The sensibility of water leak alarm can be adjusted, so as the length of detecting cable. It is perfect for computer room, server room, base station, electric room, data centre, factory or office, piping storage tank...etc.