Wireless alarm whistle has adopted host and sound light whistle integrative. When the sensor of system detected the alarm situation, host will be issue the higher ringing, alarm light will flashing. And the transmit method is wireless between host and sensor, convenient for installation. Use remote controller disposes recovery and quashes recovery; it is very simple for operation. Also it can setting as non sound status by remote controller, when alarm happened, alarm light will flashing, but alarm whistle will not working. The remote controller has an urgency alarm button; push the button, alarm whistle will ring at once.