【Instant Alarm】Once the door alarm and magnet are separated by more than 0.78 in (20mm), the wireless alarma para casa will immediately sound, continuing until you close the door. This home security alarm system is equipped with both a chime mode and an alarm mode, providing you with more choices and enhanced security protection. | 【3-Level Volume Adjustment】The door alarm responds quickly to movement with a 100 dB alarm volume, alerting you to any intrusion and preventing unauthorized child exits. You can also choose from low, medium, or high volume levels based on your needs, meeting the requirements of different environments.(Note: In alarm mode, the volume may be slightly loud for children. Please remember not to startle them.) | 【Easy Installation】The door sensor alarm does not require wires or screws; it comes with double-sided adhesive tape for easy installation at various locations in your home. The window alarm needs to be installed in a clean area, ensuring that the sensor is placed within 0.5 in of the alarm arrow side. | 【Safe and Reliable】Window alarm sensors can detect the entry and exit situations, ensuring the safety of you and your family. They guarantee that children stay away from cabinets or swimming pools and monitor elderly individuals for moments of distraction, sleepwalking, or getting out of bed, preventing any potential dangers. | 【Multi-scene Usage】This door alarms for home security allows you to live with peace of mind. The door and window alarm can be used for window security, door open alarm, swimming pool alarms, cabin alarms, garage alarms, car alarms, or residential alarms. Its compact design makes it an ideal entry alert for apartments, mobile homes, offices, hotels, garages, and more. | 【36-Month Warranty】The door alarm is powered by batteries (included). If the alarm is not functioning, please check if it is in the off mode or if the battery needs to be replaced. If you encounter any issues while using the door window alarm sensor, please feel free to contact our professional customer service team and enjoy the TechRise 36-month warranty period (for registered users only).