Knight YEND74 Grade 3 Class II Multi-Resistor Surface Magnetic Contact
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Product Type & Design: Surface-mounted magnetic contact engineered for high-security intrusion detection systems
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Security & Environmental Rating: Certified to EN 50131 Grade 3 standards and Environmental Class II compliance
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Tamper & Interference Safety: Features built-in magnetic interference detection alongside an integrated microswitch tamper
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Wiring & Resistor Configuration: Includes onboard jumper-selectable end-of-line (EOL) multi-resistors supporting both 2-wire supervised EOL and traditional 4-wire installation modes
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Applications: Ideal for high-security perimeter door and window monitoring across major commercial control panel brands
140.00د.إ 240.00د.إ
The Knight YEND74 surface magnetic contact provides perimeter monitoring for doors and windows in commercial and high-security residential applications. Constructed from durable ABS plastic housing with a rhodium reed switch and a ferrite magnet, the device incorporates dual reed switches—one for standard contact operation ($15\text{ mm}$ make, $25\text{ mm}$ break) and one specifically dedicated to detecting magnetic interference attempts.
To streamline installation across different alarm control panel platforms, the YEND74 features an integrated multi-resistor PCB with straightforward pin jumpers. Installers can configure pre-set EOL and alarm resistor combinations (such as Honeywell, Cooper, Siemens, RISCO, DSC, and others) or bypass resistors for traditional 4-wire wiring. The contact and magnet utilize identical housing dimensions for uniform appearance.
| Category | Specification Parameter | Technical Detail / Value |
| Basic Parameters | Brand & Product Name | Knight Fire & Security Products Ltd | Grade 3 Multi-Resistor Surface Contact (YEND74) |
| Security Grade & Colors | EN Grade 3, Class II | White (YEND74), Brown (YEND74B), Black (YEND74BK) | |
| Contact Type | Normally Closed (circuit complete when magnet present) | |
| Detection & Mechanics | Reed Switch & Anti-Sabotage | Rhodium reed (15 mm make / 25 mm break) | Magnetic interference reed & Microswitch cover tamper |
| Magnet Type | Ferrite magnet | |
| Electrical Ratings | Voltage & Current | Max 1–100 V DC / 1–125 V AC | Max 500 mA DC / 500 mA AC |
| Terminals & Wiring | 2× Tamper, 2× Alarm terminals | 2-wire supervised (EOL/Alarm) or traditional 4-wire | |
| Physical Specifications | Casing Dimensions & Material | 78×24×20 mm (contact & magnet) | White ABS Plastic |
| Mounting & Cable Entry | 73 mm screw spacing | 53 mm & 22.5 mm cable entry points | |
| Operating Temperature | −40°C to +50°C |
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