Daytech Wireless Panic Button Alarm-120dB Strobe Siren with Panic Buttons,
「Wireless Outdoor/Indoor Siren」: The panic button alarm with 120dB sound and flash, cannot be used alone, it has to work with the call button or remote. In event of instruction, the call button will send a RF signal to the siren, and then siren will sound a piecing voice(Although not piercing loud like a normal fire alarm, you need to protect your hearing when you use it).
