If the heater leaks or overflows, the alarm will sense the liquid and give an audio alarm to alert the homeowner that there is a problem.
如果加热器泄漏或溢出，报警器会检测液体并给出了一个声音报警，提醒房主，有一个问题。
2
System hardware circuit audio digital signal source achieve this functions: sound signals, sound intensity level control, data communications, liquid crystal display, alarm and power.