5pcs Embedded Safety Alarm Door Window Contact Sensor Magnetic Reed

Features-Material: Plastic + magnetic items-Color: Black-Size: 2.3x1.9x1cm/0.9x0.75x0.39in-Product Info:Door and window contact sensor- Easy to install, easy to use personal alarm.- Circuit is connected when magnet is closed magnetic safety door closing system.- Designed for use with alarm systems embedded magnets.-Note: Normally closed signal (conducting when merging, disconnecting when opening the door, connecting the alarm host.) upgraded portable door lock stop alarm- contacts, very practical and useful Recessed Door Contact.- Magnetic operated by an applied magnetic field door magnets.Package Include5 x alarmsGoods Informationelectrical contacts for doors etc.security door magnet NOTE：This product is not suitable for .door opening alarm Easy to install and use.adjustable chime doorbell It is designed for use with alarm systems, great for use in family and factory window, door.magnetic alarm This item are 5pcs plastic reed which are operated by an applied magnetic field

• Door opening alarm--contacts, very practical and useful,door alarms when opened
• Travel door alarm--designed to do embedded in door or window frame in door or window frames,freezer door alarm
• Magnetic door alarm--circuit is connected when magnet is closed,reed
• Magnets for alarm sensors--fits your needs and alert you of your home security,recessed wired door window alarm
• Electrical contacts for doors--easy to install, easy to use,magnetic alarm