Wireless Door and Window Sensor, Dual Mode Control, 100m Range, Energy Saving Automation(3PCS)

RF Contact Sensor for Doors and Windows with Mini Wireless Receiver, AC85V to 240V, 433 MHz. Key benefits and why you need it. - Automatically controls electrical devices based on door or window open and closed status, removing the need for manual switching. - Flexible operation modes let you choose whether connected devices turn on when a contact opens or when it closes, matching different installation needs. - Compact receiver and battery-powered sensor make installation fast and noninvasive for doors, windows, cabinets, garages, and utility rooms. What makes this product stand out. - Preconfigured control signals so the system is ready to use immediately after receipt. - Long wireless range and strong RF signal capable of passing through walls for reliable remote control up to 100 meters in open air (theoretical). - Dual control options: sensor-triggered switching and manual press-button switching on the receiver for added convenience. Main features. - Two sensor control modes are available, labeled M1 and M2, and selectable on the door sensor transmitter for either normally-open or normally-closed behavior. - Mini wireless receiver supports both automatic sensor control function and manual press-button switch control function. - Battery-powered door sensor includes a 23A 12V battery and a battery life of approximately two years under normal use. - Both sensor and magnet install with included double-sided adhesive tape, and expansion screws are provided for permanent mounting. - Control signals are configured at the factory so no additional coding is required for basic pairing. Technical specifications. - Mini wireless receiver input voltage: AC85V to 240V. - Receiver load current: 10 A. - Receiver maximum load power: 2000 W. - Receiver operating frequency: 433.92 MHz. - Receiver socket size: 47 x 42 x 23 mm. - Door sensor RF frequency: 433 MHz. - Transmitting range: up to 100 m theoretical open-air range. - Sensor battery: 23A 12V battery included. - Installation accessories included: double-sided tape and expansion screw. Installation and setup. - Attach the transmitter and magnet using the supplied double-sided tape