Alarming Strong: Above 120dB (distance 10cm); Above 100dB( distance 50cm)
Built-in Battery: 3pcs AG13 batteries in annunciator and 2pcs AG13 in yellow LED.
When you draw out the puller, the annunciator will produce 100dB and 120dB warning sounds, which can appeal crowed. That can protect your property, especially that when the woman or children encounter emergency situation. Just like your personal bodyguards.
When you press the button, the yellow LED will be turn on. Which can give you luminance when you walk in the night.