Sensors of opening

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  • Sensor of opening magnetic-contact Electron ESMK-3

    Designed to track the opening of doors of windows, hatches, gates; Mortise type installation on wooden, plastic and metal-plastic surfaces; The sensor is made in a classic design made of plastic; The distance of the elements in the standby mode is 10 mm, with an alarm of 25 mm; It is supported by any central security alarms that work with NC loops.
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  • Sensor of opening magnetic-contact Electron ESMK-4

    Designed to track the opening of doors of windows, hatches, gates; Overhead installation type on wooden, plastic and metal-plastic surfaces; The sensor is made in a classic design made of plastic; The distance of the elements in the standby mode is 10 mm, with an alarm of 25 mm; It is supported by any central security alarms that work with NC loops.
    26 Add to cart
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  • Sensor of opening of magnetocontact Electron ECMK-1 black

    Designed to track the opening of doors, windows; Easily and conveniently mounted on the door of the window hatches; The distance of the elements in the standby mode is 10 mm, with an alarm of 25 mm; It is supported by any central alarms that work with NC loops; Used to protect the house, shop, hotel, restaurant, office building, school, bank, library, warehouse, etc.
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  • Sensor of magnetic contact opening Alay SOMK 1-1

    Designed to track the opening of doors of windows, hatches, gates; Overhead installation type on wooden, plastic and metal-plastic surfaces; The sensor is made in a classic design made of plastic; The distance of the elements in the standby mode is 15 mm, with an alarm of 40 mm; It is supported by any central security alarms that work with NC loops.
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  • Sensor of opening of magnetocontact Electron ECMK-1 white

    Designed to track the opening of doors, windows; Easily and conveniently mounted on the door of the window hatches; The distance of the elements in the standby mode is up to 10 mm, the threshold of operation is 25 mm; It is supported by any central alarms that work with NC loops; Used to protect the house, shop, hotel, restaurant, office building, school, bank, library, warehouse, etc.
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  • Sensor of magnetic contact opening Alai SOMK 3-11

    Designed to track the opening of doors of windows, hatches, gates; Mortise type of installation on wooden, plastic and metal-plastic surfaces; The sensor is made in a classic design made of plastic; The distance of the elements in the standby mode is 7 mm, with an alarm of 16 mm; It is supported by any central security alarms that work with NC loops.
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  • Sensor of opening of magnetocontact Electron ECMK-5 white

    Designed to track the opening of doors of windows, hatches, gates; Quickly mounted inside the door, windows, and so on; The distance of the elements in the standby mode is 10 mm, with an alarm of 25 mm; It is supported by any central alarms that work with NC loops; Used to protect the house, shop, hotel, restaurant, office building, school, bank, library, warehouse, etc.
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  • Detector for magnetic contact Alai SOMK 1-9

    Designed to track the opening of doors of windows, hatches, gates; Overhead installation type on wooden, plastic and metal-plastic surfaces; The sensor is made in a classic design made of plastic; The distance of the elements in the standby mode is 15 mm, with an alarm of 34 mm; It is supported by any central security alarms that work with NC loops.
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  • Sensor of opening of magnetocontact Electron ECMK-5 black

    Designed to track the opening of doors of windows, hatches, gates; Quickly mounted inside the door, windows, and so on; The distance of the elements in the standby mode is 10 mm, with an alarm of 25 mm; It is supported by any central alarms that work with NC loops; Used to protect the house, shop, hotel, restaurant, office building, school, bank, library, warehouse, etc.
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  • Sensor of magnetic-contact opening Satel K-2

    Mortise type of installation in doors and windows is provided; The sensor is made of white polystyrene; The distance of the elements when closing the contacts is 28 mm, with the opening - 40 mm; It is supported by the central blocks of burglar alarms, working with NC loops.
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  • Detector of magnetic contact Satel K-1

    Provision is made for an overlaid type of installation on doors and windows; The sensor is made of white polystyrene; The distance of the elements when the contacts are closed is 18 mm, with the opening - 28 mm; It is supported by the central blocks of burglar alarms, working with NC loops.
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  • Sensor of opening of magnetocontact Electron ECMK-7EP

    Designed to track the opening of iron doors, gates, hatches; Easily and conveniently mounted on the door of the window hatches; The distance of the elements in the standby mode is 8 mm, with an alarm of 12 mm; It is supported by any central alarms that work with NC loops; Used to protect the house, shop, hotel, restaurant, office building, school, bank, library, warehouse, etc.
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  • Sensor of opening of magnetocontact Electron ECMK-7P

    Designed to track the opening of iron doors, gates, hatches; Easily and conveniently mounted on the door of the window hatches; The distance of the elements in the standby mode is 18 mm, with an alarm of 25 mm; It is supported by any central alarms that work with NC loops; Used to protect the house, shop, hotel, restaurant, office building, school, bank, library, warehouse, etc.
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  • Detector of magnetic contact Satel K-2 BR

    Mortise type of installation in doors and windows is provided; The sensor is made of polystyrene brown; The distance of the elements when closing the contacts is 28 mm, with the opening - 40 mm; It is supported by the central blocks of burglar alarms, working with NC loops.
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  • Detector of magnetic contact Satel K-1 BR

    Provision is made for an overlaid type of installation on doors and windows; The sensor is made of polystyrene brown; The distance of the elements when the contacts are closed is 18 mm, with the opening - 28 mm; It is supported by the central blocks of burglar alarms, working with NC loops.
    78 Add to cart
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  • Sensor of opening of magnetocontact Electron ECMK-8

    Designed to track the opening of iron doors, gates, hatches; Easily and conveniently mounted on the door of the window hatches; The distance of the elements in the standby mode is 18 mm, with an alarm of 25 mm; It is supported by any central alarms that work with NC loops; Used to protect the house, shop, hotel, restaurant, office building, school, bank, library, warehouse, etc .; It is equipped with self-adhesive tape for easy installation.
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  • Wireless sensor for opening the door / window Sentinel M-401

    Designed to track the opening of doors and windows; Fully wireless, easy to assemble; The trigger threshold is 1 cm; Transmits the wireless signal for a distance of up to 100 m; Works with all the Sentinel centers; Operates from one battery to 12 months.
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  • Sensor of opening magneto-contact Satel S-1 BR

    Provision is made for an overlaid type of installation on doors and windows; Equipped with a tamper train; The sensor is made of polystyrene brown; The distance of the elements when the contacts are closed is 18 mm, with the opening - 28 mm; It is supported by the central blocks of burglar alarms, working with NC loops.
    131 Add to cart
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  • Detector of magnetic contact Satel S-1

    Provision is made for an overlaid type of installation on doors and windows; Equipped with a tamper train; The sensor is made of white polystyrene; The distance of the elements when the contacts are closed is 18 mm, with the opening - 28 mm; It is supported by the central blocks of burglar alarms, working with NC loops.
    131 Add to cart
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  • Wireless sensor of opening Sentinel M-402 (on metal)

    Designed to track the opening of metal doors and gates; Protected against interference from massive metal products; The trigger threshold is 3 cm; Fully wireless, easy to assemble; Transmits the wireless signal for a distance of up to 100 m; Works with all the Sentinel centers; Operates from one battery to 12 months.
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  • Detector for magnetic contact Satel B-3 A

    Provision is made for an overlaid type of installation on doors and windows; Suitable for outdoor installation; The sensor is enclosed in a metal sealed enclosure with wires with metal braid; The distance of the elements when the contacts are closed is 38 mm, with the opening - 42 mm; It is supported by the central blocks of burglar alarms, working with NC loops.
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  • Wireless sensor opening Tecsar Alert SENS-D

    Designed to detect the opening of the door / window; Works in conjunction with the security alarm Tecsar Alert WARD; Reading threshold - 1 cm; It is powered by a 23A battery (up to 2 years); LED indication of activation; Radius of the radio signal up to 30/100 meters (closed room / open space); The case is made of high-strength ABS plastic, tamper protection from opening; Easy to install and configure.
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  • Detector for magnetic contact Satel B-4 S

    Provision is made for an overlaid type of installation on doors and windows; Suitable for outdoor installation; The sensor is enclosed in a metal sealed enclosure with wires with metal braid; The distance of the elements when closing the contacts is 75 mm, with the opening - 80 mm; It is supported by the central blocks of burglar alarms, working with NC loops.
    549 Add to cart
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  • Wireless door / window sensor Ajax DoorProtect white

    Used to track the opening of a door / window; It is compatible with wired control panels using the Ajax ocBridge Plus radio sensor receiver, as well as the Lun version 11 of the mod.3 and 4 and the Lun-19 PPC via the Ajax uartBridge interface receiver; Two versions of the magnet - for a parallel and perpendicular installation; A powerful magnet that simplifies installation on the surface with displacement; The trigger threshold is 2 cm; English reed switch - does not stick, it works over 1,000,000 discoveries; The possibility of connecting additional wire-based open sensors; 2-way communication, regularly transmits test signals and information about the discharge of the battery to the central unit; Unique wireless technology: long range of work, message encryption and protection against forgery; The maximum distance between the sensor and the control center is 2000 m; Work in real conditions on several floors of the business center; Adjustable period of sensor interrogation; Powered by CR123A battery up to 7 years; The case is protected from opening by a tamper;
    680 Add to cart
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  • Wireless door / window sensor Ajax DoorProtect black

    Used to track the opening of a door / window; It is compatible with wired control panels using the Ajax ocBridge Plus radio sensor receiver, as well as the Lun version 11 of the mod.3 and 4 and the Lun-19 PPC via the Ajax uartBridge interface receiver; Two versions of the magnet - for a parallel and perpendicular installation; A powerful magnet that simplifies installation on the surface with displacement; The trigger threshold is 2 cm; English reed switch - does not stick, it works over 1,000,000 discoveries; The possibility of connecting additional wire-based open sensors; 2-way communication, regularly transmits test signals and information about the discharge of the battery to the central unit; Unique wireless technology: long range of work, message encryption and protection against forgery; The maximum distance between the sensor and the control center is 2000 m; Work in real conditions on several floors of the business center; Adjustable period of sensor interrogation; Powered by CR123A battery up to 7 years; The case is protected from opening by a tamper; The sensor measures the ambient temperature and transmits information about the current temperature;
    680 Add to cart
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  • Door / window open sensor with impact and tilt sensor Ajax DoorProtect Plus black

    Used to track the opening of the door / window, change the angle of inclination and impact; It is equipped with two magnets with radii of action of 1 cm and 2 cm; The threshold of operation of the reed switch is 2 cm (large magnet) / 1 cm (small magnet); Threshold of the tilt sensor is more than 5 °; Adjustable sensitivity to impacts (3 levels); First Skip Skip Function; English reed switch: does not stick, it works over 1,000,000 discoveries; Possibility of connecting an additional wired sensor; 2-way communication, regularly transmits test signals and information about the discharge of the battery to the central unit; Unique wireless technology: long range of work, message encryption and protection against forgery; The maximum distance between the sensor and the control center is 1000 m; Work in real conditions on several floors of the business center; Adjustable period of sensor interrogation; Powered by CR123A battery up to 5 years; The case is protected from opening by a tamper.
    915 Add to cart
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  • Door / window sensor with hammer and tilt sensor Ajax DoorProtect Plus white

    Used to track the opening of the door / window, change the angle of inclination and impact; It is equipped with two magnets with radii of action of 1 cm and 2 cm; The threshold of operation of the reed switch is 2 cm (large magnet) / 1 cm (small magnet); Threshold of the tilt sensor is more than 5 °; Adjustable sensitivity to impacts (3 levels); First Skip Skip Function; English reed switch: does not stick, it works over 1,000,000 discoveries; Possibility of connecting an additional wired sensor; 2-way communication, regularly transmits test signals and information about the discharge of the battery to the central unit; Unique wireless technology: long range of work, message encryption and protection against forgery; The maximum distance between the sensor and the control center is 1000 m; Work in real conditions on several floors of the business center; Adjustable period of sensor interrogation; Powered by CR123A battery up to 5 years; The case is protected from opening by a tamper.
    915 Add to cart
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The door opening sensor is the most used security alarm element. The reed switch included in the design of each door opening detector is a primitive and cheap element, which makes this type of sensor very competitive in price. The main principle of the detector is to remove the magnet for a certain distance, in which the contacts of the sealed contact open and the sensor responds. The distance of removal of the magnet from the body of the sensor is approximately 1.5 cm, which allows the sensor to detect a small opening of the door or window and at the same time protect the system from false triggers caused by drafts or vibrations.
The door sensor is a simple and reliable device for the first line of protection. These detectors can also be used to control access, separate guard zones and even control PTZ cameras. You can buy the reed switch from us at the lowest price. Our company cooperates with the largest suppliers of security equipment, which guarantees the continued availability of this type of goods in our warehouses.