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Ships within 48 hours · Estimated delivery Aug 18 - Aug 23
No Distortion Frequency：10Hz-15KHz
The receiver keeps ringing
4 ounces Manufacturer CallToU Batteries 6 12V batteries required
Chinese style
CallToU 4 Pcs Door Alarm/Window Alarm, Home Wireless Door Sensor for Kids and Elderly Safety, 120DB Anti Theft Security Magnetic Sensor Color:10 Pcs Door Alarm No Distortion Frequency：10Hz-15KHzProduct Description Door & Window Alarms: Guarding Security,Peace of Mind QA Are the alarms easy to install? YES. Just remove the 3M double sided tape and ensure the gap between the alarm does not exceed 0. 4in. The arrows of the alarm are aligned with each other. How long do the batteries typically last? The batteries are already built into the alarm. 1 Alarm Pack for 3*LR44 batteries and will last 12 months normally. Can the volume of the alarm be
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