... by earphone III Instruction 3.1 Power on Turn on the power button on the left. ( Turning it up means ... means audio alarm.) When the Green indicator is on, you can enlongate the detecting antenna, then the ... the equipment, and the 4 signal lights were still on. IV. Strongpoints 4.1 Small volum, easy to ... Easy to operate, 3 buttons for on and off (on with vibrant alarm, on with audio alarm, and off ) ...