Magnetic detector NC door window SATEL B-2S BR miniature recessed hermetic 6,5 mm
- Miniature hermetic NC magnetic detector for recessed mounting in doors and windows, used to detect their opening; reed contact opening distance: 33 mm.
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B-2S BR miniature magnetic detector for recessed mounting
B-2S BR is a miniature, hermetic reed front detector designed for recessed mounting into the leaf and frame of doors or windows. It is a perimeter protection element for detecting the opening of doors and windows, available in white and brown color versions.
- Magnetic detector for perimeter protection of doors and windows
- Miniature, hermetic housing with a diameter of approximately 6.5 mm
- Designed for recessed mounting into the leaf and frame
- Invisible from the outside when properly installed
- Available in white and brown versions (BR - brown version)
Application and mounting
The B-2S BR detector is designed to implement perimeter protection by controlling the opening of doors and windows using a built-in reed switch and magnet. The installation consists in recessing the reed switch element into the leaf, and the element with the magnet into the frame (or vice versa), so as to maintain the contact tripping distances specified by the manufacturer. Thanks to recessed mounting, the elements remain virtually invisible from the outside after installation, which contributes to the aesthetics of the finish. The miniature dimensions of the housing facilitate installation even in narrow door and window profiles.
Operating characteristics and environmental conditions
The reed switch in the B-2S BR detector operates in NC logic, which means that in the resting state the contacts are closed and open when the magnet is moved beyond a certain distance. The manufacturer specifies the distance of closing the reed switch contacts at 25 mm, while the distance of opening them at 33 mm, which is the basic parameter for the placement of the reed switch element and the magnet. The detector is suitable for operation in a wide temperature range from -10 to +55 °C and at a maximum humidity of 93±3%, and its environmental class according to EN50130-5 is Class II. Thanks to its hermetic housing, the element is adequately protected against environmental conditions typically found in rooms where burglar alarm systems are installed.
Mechanical design and electrical parameters
The detector consists of two basic components: a reed switch housing and a magnet housing. The reed switch housing measures 27 x 6.5 mm, while the magnet housing measures 19.05 x 6.35 mm, which makes it possible to make small mounting holes in woodwork elements. The length of the wires coming out of the detector is 450 mm, which allows convenient connection to the wired surveillance line of the alarm system. On the electrical side, the maximum switching voltage is set at 100 V, the maximum load power at 10 W, and the maximum switching current at 500 µA. The maximum contact resistance does not exceed 150 Ω, which is an important parameter for line design and selection of supervision elements.
Technical data
| Parameter | Value |
|---|---|
| Model | B-2S BR |
| Device type | miniature, hermetic magnetic (reed) front detector |
| Purpose | perimeter protection, door and window opening detection |
| Mounting method | recessed mounting in door or window leaf and frame |
| Colors | white and brown version available (BR - brown version) |
| Diameter of detector housing | approx. 6.5 mm |
| Reed switch housing dimensions | 27 x 6.5 mm |
| Magnet housing dimensions | 19.05 x 6.35 mm |
| Detector type | NC |
| Contact closure distance of reed relay | 25 mm |
| Reed relay contact opening distance | 33 mm |
| Maximum switchable voltage | 100 V |
| Maximum load power | 10 W |
| Maximum switchable current | 500 µA |
| Maximum contact resistance | 150 Ω |
| Operating temperature range | -10...+55 °C |
| Maximum humidity | 93±3% |
| Environmental class according to EN50130-5 | II |
| Cable length | 450 mm |
| Weight | 12 g |
Technical data source: datasheet of model B-2S BR Link
FAQ - Frequently Asked Questions
For what application is the B-2S BR detector designed?
The B-2S BR detector is designed for perimeter protection, primarily for detecting the opening of doors and windows in burglary and assault alarm systems.
How is the B-2S BR detector installed?
The detector is mounted by recessing the reed switch housing into the leaf and the magnet housing into the door or window frame (or vice versa), according to the required distances of closing and opening contacts.
Is the detector visible after installation?
After correct recessed installation, the detector is invisible from the outside, as both components are hidden in the sash and frame material.
What type of reed switch is in the B-2S BR detector?
The reed switch in the B-2S BR detector is of NC type, which means that the contacts are normally closed and open when the magnet is moved beyond a certain distance.
What are the tripping distances of the reed switch contacts?
The closing distance of the reed switch contacts is 25 mm, while the opening distance of the contacts is 33 mm.
In what temperature range can the B-2S BR detector operate?
The operating temperature range of the B-2S BR detector is -10 to +55 °C.
What is the permissible operating humidity of the detector?
The maximum operating humidity of the detector is 93±3%.
What environmental class according to EN50130-5 does the B-2S BR detector have?
The B-2S BR detector has an environmental class II according to EN50130-5.
What are the dimensions of the reed switch and magnet housing?
The reed switch housing measures 27 x 6.5 mm, while the magnet housing measures 19.05 x 6.35 mm.
What is the maximum switching voltage of the detector?
The maximum switching voltage for the reed switch contacts of the B-2S BR detector is 100 V.
What is the maximum contact load power?
The maximum load power of the reed switch contacts is 10 watts.
What is the maximum switching current?
The maximum switching current of the contacts is 500 µA.
What is the maximum contact resistance?
The maximum contact resistance of the reed switch is 150 Ω.
What is the length of the wires coming out of the detector?
The length of the wires in the B-2S BR detector is 450 mm.
How much does the B-2S BR detector weigh?
The weight of the B-2S BR detector is 12 g.
In what color versions is the detector available?
The detector is available in white and brown versions, with the BR designation referring to the brown version.
Is the detector's housing airtight?
Yes, the detector has a small airtight housing with a diameter of about 6.5 mm.
The B-2S BR product is a miniature recessed-mount magnetic detector designed for perimeter protection of doors and windows. The device is characterized by the mechanical, electrical and environmental parameters specified by the manufacturer, which allows it to be properly used in burglar alarm systems.