Door sensor detector for windows, doors, cabinets, drawers and more. A magnetic door sensor that provides wireless notifications when a monitored item opens. Note: It does not work without a gateway (not included). Wireless door sensor with low power consumption and long life. Battery life up to 2 years. Notification door sensor with tamper protection and reminders. Easy wireless setup for everyday use. Use scenarios - Attach to a front or back door to receive an instant open/close alert. - Install on medicine cabinets or jewelry drawers to monitor access. - Place on windows, pantry doors, or tool cabinets to remind you to close and secure items. Key attributes - Function: detects opening of doors, windows, cabinets or drawers and sends notifications - Compatibility: requires gateway to operate (gateway not included) - Performance: wireless, low power consumption, up to 2 years battery life - Security: tamper protection, reminders - Convenience: simple wireless setup and maintenance