TECKNET - Door Stop Alarm, 130dB Siren, Rechargeable Wedge, Non-Slip Base, Anti-Theft for Home/Hotel/Apartment

No AAA batteries needed—this TECKNET door stopper alarm has a built-in rechargeable lithium battery that charges via USB-C in 2-3 hours and lasts up to three months. Low battery? It beeps three times and flashes the LED to remind you. Weighing just 42 grams, it's small, lightweight, and button-free, so it won't snag on cables or clothes—perfect for travel. The adjustable sensitivity roller lets you fine-tune the trigger point: high for safety, low to prevent false alarms. Its integrated silicone base grips tiles, wood, and carpet firmly, protecting floors from scratches and preventing the door from sliding open. Backed by a 24-month warranty, it's a reliable choice for everyday home security.