Concealed Reed Switch Door and Window Sensor Key benefits Reliable security input: Normally closed reed switch provides a clear closed when closed and open when separated signal for alarm panels and control systems. Durable materials: ABS flame retardant housing combined with a magnet reed switch built to resist temperature and deformation for long term stability. Concealed installation: Designed to be hidden inside wooden or aluminum alloy door and window frames for a clean appearance and reduced tampering. Precise detection: 7 to 17 mm actuation distance delivers fast response and accurate detection to reduce false readings and improve system responsiveness. What it does Detects door or window open and closed status using a magnet and reed switch pair. Outputs a normally closed signal when the magnet is in contact and opens the circuit when the magnet is separated. Key specifications Housing material: ABS flame retardant. Sensor type: Reed switch with magnet designed to resist temperature and deformation. Switch output: Normally closed. Installation: Concealed mounting for wooden doors and windows or aluminum alloy doors and windows. Actuation distance: 7 to 17 mm, with fast reflection and accurate detection. Why customers need it Provides a discreet, reliable input for security systems where visible sensors are not desired. Reduces risk of sensor damage and misalignment thanks to robust materials and temperature resistance. Compatible with common door and window frame materials so it can be used across different installations. Installation notes Designed for concealed mounting inside the frame; ensure proper alignment of magnet and switch within the 7 to 17 mm range for reliable operation. Normally closed output means the circuit is closed while the door or window is shut and opens when the door or window is opened. Typical applications Home entry doors and windows where a concealed sensor is preferred for aesthetic or tamper resistance. Office and commercial doors or windows with wooden or aluminum alloy frames that require reliable open closed status input. Residential or commercial retrofit projects where the sensor needs to be hidden inside existing frames. This sensor offers a straightforward, durable solution for concealed door and window monitoring with clear normally closed output and dependable performance in varied temperature conditions.