5pcs Black Plastic Recessed Door Window Contact Sensor Alarm Reed

Package Include5 x alarmsCharacteristics-Material: Plastic + magnetic items-Size: 2.3x1.9x1cm/0.9x0.75x0.39in-Color: Black-Note: Normally closed (conducting when merging, disconnecting when opening the door, connecting the alarm host.) Recessed Door Contact-Product Info:Door and window contact sensor- Smaller sensors to seamlessly blend into your home door and window sensors.- The product designed great for use in family and factory window, door. etc door alarms for home security,.- The door should be from the magnetic field source such as a recessed wired door window alarm.- Designed to do embedded in door or window frame in door or window frames security and anti-theft door - Fits your needs and alert you of your home security door handle vibration alarm.Goods Descriptiondoor window alarms This item is 5pcs pre- door magnetic alarms, which are used indoors and outdoors for an attractive installation.personal alarm NOTE：This product is not suitable for .magnetic door They are ideal for mounting on wooden doors or

• Recessed door contact:easy to install, easy to use,magnetic door alarm
• Garage door alarm:can identify the opening and closing states, and realize alarm,magnetic safety door closing system
• Magnetic alarm :this contacts works with any access control or alarm system available,magnetic door closing system
• Personal alarm:magnetic operated by an applied magnetic field,window sensors security
• Intelligent door magnetic alarm:contacts, very practical and useful,security and anti-theft door blocker