Description: This set of magnetic sensor detectors includes the wired part and the matching part, which is ideal for installation on doors of houses, garages, warehouses, businesses and shops, etc. Protect your home with this set of door security accessories. Functions: This is a set of magnetic detection switches, which are mostly used to protect doors and windows. Safety device monitors the opening and closing of doors and windows. High quality magnetic sensor contacts with strong magnetic, sensitive response and long service life. The wired part is often mounted on the fixed door frame and the counterpart is mounted in the appropriate place on the door. Easy to install and use. A good replacement for the old contacts. Easy to install, no problems. Technical data: Condition: 100% brand new. Material: zinc alloy. Colour: as shown in the picture. Rated voltage: 12 V. Rated current: 120 mA. Detection distance: 50 ~ 70 mm. Package includes: 1 x set of magnetic detection contacts. Note: Cannot be used alone. Should work with the alarm system main unit to alarm. Features [Product Application] This is a series of magnetic detection switches, which are mainly used to protect doors and windows. [Easy to install] Easy to install and easy to use. The protective device monitors the opening and closing of doors and windows. The protective device monitors the opening and closing of doors and windows [High quality and durability] High-quality magnetic sensor contacts are magnetically strong, responsive and durable. High quality magnetic sensor contacts with strong magnetic, sensitive response and long durability [Product use method] The wired part is usually mounted on a fixed door frame, while the matching part is mounted on the door in the appropriate position [Service] If for any reason you are not satisfied with our products, you are entitled to a full refund or replacement. If you have content that does not meet your expectations, please feel free to contact us. We will support you online 24/7.