Magnetic perimeter detector SATEL B-2FL recessed hermetic NC diameter 12.7 mm range -10...+55°C
- Hermetic magnetic (reed switch) type NC detector for recessed mounting, used to detect the opening of doors and windows, housing diameter 12.7 mm.
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B-2FL hermetic magnetic detector for recessed mounting
The B-2FL magnetic detector is a flanged hermetic reed detector designed for recessed mounting in elements such as doors and windows. Once installed, it remains invisible from the outside and is available in a white color version.
- Magnetic detector for perimeter protection of doors and windows
- Hermetic housing design with round flange
- Recessed mounting, invisible after installation
- Housing diameter 12.7 mm
- Available in white B-2FL and brown B-2FL BR versions
Application and installation of the B-2FL detector
The B-2FL detector is designed to signal the opening of doors, windows and other movable elements in intrusion alarm systems. Thanks to recessed mounting, the detector is placed inside the profile structure, which improves the aesthetics of the installation and makes it difficult to notice from the outside. This solution is particularly recommended for places requiring discreet perimeter protection, such as residential, office or service buildings.
The hermetic housing with a circular flange makes it easy to embed the detector in a properly prepared mounting hole. The detector's small size and 12.7 mm housing diameter allow installation in narrow profiles. Cable length of 450 mm gives flexibility in routing wiring to the control panel or system input modules.
Electrical and environmental characteristics
The B-2FL detector is an NC-type detector, which means that the contacts are short-circuited in the idle state, and open when the magnet is moved a certain distance away. Electrical parameters include a maximum switching voltage of 100 V, a maximum load power of 10 W, and a maximum switching current of 500 µA, which allows it to work with typical alarm system inputs in low-current signal circuits. The maximum contact resistance of 200 Ω ensures proper operating conditions in typical SSWiN installations.
The operating temperature range of the detector is -10 to +55 °C, and the maximum humidity is 93±3%, which allows the device to be used in a wide range of environmental conditions. The B-2FL has an environmental class II according to EN50130-5, which defines its resistance to typical conditions expLoatation in protected facilities. Its light weight of 12 g facilitates installation in delicate window and door structures.
Mechanical design and dimensions
The reed switch housing and the magnet housing have dimensions of 25.4 x 15.5 mm, which facilitates symmetrical installation of both elements relative to each other. The contact closure distance of the reed switch is 19 mm, while the contact opening distance is 24 mm, which defines the required distance between the fixed and moving element (reed switch and magnet) for proper detector operation. A small, airtight flanged housing provides stable seating and protection of the reed switch element from external factors.
The detector is available in two color versions: white (B-2FL) and brown (B-2FL BR), which makes it easy to match the color of the door or window woodwork. This makes it possible to maintain the aesthetics of the finish while providing effective perimeter protection. This solution fits the requirements of both installation in new facilities and modernization of existing security systems.
Technical data
| Parameter | Value |
|---|---|
| Device type | Magnetic (reed) detector for perimeter protection |
| Mounting method | Recessed mounting |
| Housing type | Small hermetic housing with round flange |
| Housing diameter | 12.7 mm |
| Dimensions of reed switch housing | 25.4 x 15.5 mm |
| Magnet housing dimensions | 25.4 x 15.5 mm |
| Detector type | NC |
| Contact closure distance of reed relay | 19 mm |
| Reed relay contact opening distance | 24 mm |
| Maximum switchable voltage | 100 V |
| Maximum load power | 10 W |
| Maximum switchable current | 500 µA |
| Maximum contact resistance | 200 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 |
| Color versions | B-2FL (white), B-2FL BR (brown) |
Technical data source: datasheet of model B-2FL Link
FAQ - Frequently asked questions
1. What applications is the B-2FL detector designed for?
The B-2FL detector is designed for detecting the opening of doors, windows and similar elements in burglar alarm systems.
2. What type of output signal does the B-2FL detector have?
The B-2FL is an NC-type detector, which means that in the resting state its contacts are short-circuited, and they are opened when the magnet is moved away from the detector to the appropriate distance.
3. How is the B-2FL detector mounted?
The B-2FL detector is designed for recessed mounting in a hole drilled in the profile of a door or window.
4. What are the dimensions of the reed switch housing in the B-2FL detector?
The dimensions of the reed switch housing in the B-2FL detector are 25.4 x 15.5 mm.
5. What are the dimensions of the magnet housing in the set with B-2FL?
The magnet housing has dimensions of 25.4 x 15.5 mm.
6. What is the diameter of the B-2FL detector housing?
The diameter of the housing of the B-2FL detector is 12.7 mm.
7. What is the operating temperature range of the B-2FL detector?
The operating temperature range of the B-2FL detector is -10 to +55 °C.
8. What maximum humidity can the B-2FL detector tolerate?
The maximum operating humidity of the B-2FL detector is 93±3%.
9. What is the maximum switching voltage for the contacts of the B-2FL detector?
The maximum switching voltage for the contacts of the B-2FL detector is 100 V.
10. What is the maximum switching current of the B-2FL detector?
The maximum switching current of the B-2FL detector is 500 µA.
11. What is the maximum contact load power of the B-2FL detector?
The maximum contact load power of the B-2FL detector is 10 W.
12. What is the maximum contact resistance of the B-2FL detector?
The maximum contact resistance of the B-2FL detector is 200 Ω.
13. How long are the wires coming out of the B-2FL detector?
The length of the wires of the B-2FL detector is 450 mm.
14. What environmental class does the B-2FL detector have?
The B-2FL detector has an environmental class II according to EN50130-5.
15. What is the weight of the B-2FL detector?
The weight of the B-2FL detector is 12g.
16. In what color versions is the B-2FL detector available?
The B-2FL detector is available in a white B-2FL version and a brown B-2FL BR version.
17. What are the contact closure distances of the B-2FL detector?
The closing distance of the reed switch contacts is 19 mm, and their opening distance is 24 mm.
18. Is the B-2FL detector a hermetic element?
Yes, the B-2FL detector has a small hermetic housing with a round flange.
19. In what system is the B-2FL detector classified?
The B-2FL detector is an element of an intrusion alarm system used in perimeter protection.
20. Is the B-2FL detector visible from the outside after installation?
After proper recessed installation, the B-2FL detector is invisible from the outside.
Summary
The B-2FL magnetic detector is a hermetic NC-type reed detector for recessed mounting in perimeter protection systems for doors and windows. The device features a wide operating temperature range, small dimensions and environmental class II according to EN50130-5.