Set of 3 Magnetic Side Reed Switch NC White for Door Window Alarm System Wired Sensor ACTii AC3857
£5.10
Tax included
Delivery within 3-4 days.
A set of three professional magnetic sensors (reed switches) designed for surface mounting. These are reliable security system components, ideal for protecting windows, doors, gates, and other moving elements. Thanks to their universal design, these sensors work perfectly with most alarm control panels available on the market, such as Satel, Bosch, Elmes, or Ropam.
A key advantage of the set is its cost-effectiveness – you receive three complete sensors, which allows for securing multiple entry points in a facility. Side (surface) mounting is extremely simple and does not require specialized tools or interference with the window frame structure. The set includes strong adhesive tape and mounting screws, providing flexibility in choosing the installation method.
The sensors are characterized by a large operating gap of 20 mm, which is important for windows or doors that may have slight play or are not perfectly aligned. The use of ruthenium (Ru) as the contact material ensures exceptional durability and resistance to oxidation, which translates into years of trouble-free operation. The housing made of high-quality white ABS plastic is aesthetic and discreet, making the sensors unobtrusive after installation.
The product is resistant to a wide temperature range (from -25°C to +85°C), which allows it to be used in various environmental conditions, including unheated rooms. The two-wire lead with a length of 25 cm facilitates quick and secure connection to the alarm system. By choosing this set, you are opting for a proven solution that significantly increases the security level of your home or office.
Set of 3 Magnetic Side Reed Switch NC White for Door Window Alarm System Wired Sensor
Model: ACTii AC3857
EAN: 6931240038574 SKU: 3857498641
- Set of 3 pieces: Economical solution for securing multiple entry points.
- Simple surface mounting: Quick installation thanks to the included strong adhesive tape and screws.
- Reliable operation: 20 mm operating gap tolerates minor window sash misalignments.
- High durability: Contact made of ruthenium (Ru) ensures long service life and wear resistance.
- Versatility: Compatible with control panels from brands such as Satel, Bosch, Elmes, Ropam, AVT, and others.
- Solid housing: Made of durable white ABS plastic.
Description
A set of three professional magnetic sensors (reed switches) designed for surface mounting. These are reliable security system components, ideal for protecting windows, doors, gates, and other moving elements. Thanks to their universal design, these sensors work perfectly with most alarm control panels available on the market, such as Satel, Bosch, Elmes, or Ropam.
A key advantage of the set is its cost-effectiveness – you receive three complete sensors, which allows for securing multiple entry points in a facility. Side (surface) mounting is extremely simple and does not require specialized tools or interference with the window frame structure. The set includes strong adhesive tape and mounting screws, providing flexibility in choosing the installation method.
The sensors are characterized by a large operating gap of 20 mm, which is important for windows or doors that may have slight play or are not perfectly aligned. The use of ruthenium (Ru) as the contact material ensures exceptional durability and resistance to oxidation, which translates into years of trouble-free operation. The housing made of high-quality white ABS plastic is aesthetic and discreet, making the sensors unobtrusive after installation.
The product is resistant to a wide temperature range (from -25°C to +85°C), which allows it to be used in various environmental conditions, including unheated rooms. The two-wire lead with a length of 25 cm facilitates quick and secure connection to the alarm system. By choosing this set, you are opting for a proven solution that significantly increases the security level of your home or office.
Specification
Technical parameters
Quantity in set: 3 pieces
Sensor type: Magnetic (reed switch)
Mounting: Side, surface
Alarm output: NC (Normally Closed - when the magnet is close)
Electrical output: NO (Normally Open - without magnet)
Operating gap: 20 mm
Maximum switching voltage: 200 V
Maximum switching current: 500 mA (0.5 A)
Maximum continuous current: 1.5 A
Rated power: 10 VA
Contact material: Ruthenium (Ru)
Housing: ABS plastic
Color: White
Operating temperature: from -25°C to +85°C
Wire length: 25 cm
Sensor type: 2EOL/NC
Parametric resistance: 2 x 1.1k Ohm
Certificates: CE, RoHS
Contents
3x Magnetic sensor (reed switch)
3x Magnet
1x Set of mounting screws
1x Strong double-sided adhesive tape
Additional information
Operating principle: Why is the sensor electrically NO, but alarm-wise NC?
The operation of the sensor is very simple: bringing the magnet closer (closing the window) closes the circuit, and moving the magnet away (opening the window) breaks the circuit.
In the alarm industry, this sensor is sold as NC (Normally Closed). Why is that?
In alarm systems, the "normal" (quiescent) state is a secured building – i.e., a closed window.
Since the circuit is closed and current flows when the window is closed (the magnet is close), manufacturers call it NC.
From the point of view of pure electrical engineering, it is an NO circuit (because by default, lying on a table without a magnet, the sensor does not conduct current), however, alarm installers always look at the operating state with the window closed.
Dimensions, Weight
Product dimensions: 14 x 8 x 27 mm (D x W x H)
Package dimensions: 100 x 100 x 25 mm (D x W x H)
Product weight: 24 g
Weight with packaging: 24 g
Zum Download
3857498641
23 Items
Specific References
- EAN13
- 6931240038574
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A set of three professional magnetic sensors (reed switches) designed for surface mounting. These are reliable security system components, ideal for protecting windows, doors, gates, and other moving elements. Thanks to their universal design, these sensors work perfectly with most alarm control panels available on the market, such as Satel, Bosch, Elmes, or Ropam.
A key advantage of the set is its cost-effectiveness – you receive three complete sensors, which allows for securing multiple entry points in a facility. Side (surface) mounting is extremely simple and does not require specialized tools or interference with the window frame structure. The set includes strong adhesive tape and mounting screws, providing flexibility in choosing the installation method.
The sensors are characterized by a large operating gap of 20 mm, which is important for windows or doors that may have slight play or are not perfectly aligned. The use of ruthenium (Ru) as the contact material ensures exceptional durability and resistance to oxidation, which translates into years of trouble-free operation. The housing made of high-quality white ABS plastic is aesthetic and discreet, making the sensors unobtrusive after installation.
The product is resistant to a wide temperature range (from -25°C to +85°C), which allows it to be used in various environmental conditions, including unheated rooms. The two-wire lead with a length of 25 cm facilitates quick and secure connection to the alarm system. By choosing this set, you are opting for a proven solution that significantly increases the security level of your home or office.