2-Piece Set Wireless Door Window Alarm With Remote Control 130dB Magnetic Sensor For Home Security 4 Modes(White)

1. Alarm decibel level: 130 dB alarm sound 2. Main unit power source: 2 AAA batteries (not included)3. Remote control power source: CR2032 battery4. Standby Life: Approx. 2 years 5. Material: ABS6. Door Contact Dimensions: Approx. 9 x 4.2 x 1.55 cm 7. Magnetic Strip Dimensions: Approx. 4.52 x 1.3 x 1.2 cm 8. Remote Control Dimensions: Approx. 6.65 x 3.4 x 1.15 cm Features:1. Equipped with a four-button remote control (including arm, disarm, mode switch, and SOS emergency button), supporting remote operation within a range of approximately 35 meters in open areas2. Offers four operating modes, door-opening alarm, 15-second delay alarm, 30-second forced alarm, and doorbell chime to meet daily security and notification needs in various scenarios3. When an alarm is triggered or the SOS button on the remote control is pressed, a high-pitched 130-decibel alarm sounds, effectively serving as an early warning and deterrent4. The alarm unit is powered by two AAA batteries (not included), while the remote control is powered by a CR2032 button cell battery; both feature a low-battery beep alert5. The unit and magnetic strip are installed using adhesive backing (installation gap within 3 cm)6. A single unit can be paired with up to 20 remote controls, and a single remote control can simultaneously control multiple units