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Bosch · Alarms

Universal Roller Door Reed Switch RSRDM RDRS-NC

Model / SKU: RDRS-NC

Universal Roller Door Reed Switch RSRDM RDRS-NC. RDRS-NC Roller Shutter Reed Switch | Normally Closed | Metal Alloy Housing | 50–60mm Gap | Stainless Steel Armoured Leads The RDRS-NC is a heavy-duty normally closed reed switch designed for roller shutters, garage doors and commercial security applications. It features a durable metal alloy housing, nickel-plated neodymium magnet and 480mm stainless steel armoured cover leads with 22AWG wire. RDRS-NC Roller Shutter Reed Switch – Normally Closed The RDRS-NC Roller Shutter Reed Switch is designed for monitoring roller shutters, garage doors, commercial doors and other security applications where a robust magnetic contact is required. Built with a metal alloy housing and supplied with a nickel-plated neodymium magnet , the RDRS-NC is suitable for tougher alarm installations where a standard door reed switch may not be practical. It is commonly used to detect whether a roller shutter or garage door is open or closed as part of a hardwired alarm system. Key Features Normally closed output Metal alloy housing for durable installation 50–60mm operating gap Nickel-plated neodymium magnet 480mm stainless steel armoured cover leads 22AWG wire Suitable for roller shutters, garage doors and commercial alarm installations Specifications Model: RDRS-NC Housing: Metal alloy Gap: 50–60mm Output: Normally closed Magnet: Nickel-plated neodymium magnet Leads: 480mm stainless steel armoured cover, 22AWG wire Dimensions Contact: 106 x 38 x 10mm Magnet: 106 x 16 x 16mm Bracket: 106 x 50 x 50mm Typical Applications Roller shutter alarm monitoring Garage door security Warehouse roller doors Commercial shopfront shutters Industrial door monitoring Hardwired alarm zone inputs Why Use a Roller Shutter Reed Switch? Roller shutters and garage doors often require a stronger and more durable magnetic contact than a standard surface reed switch. The RDRS-NC provides a wider 50–60mm gap and a heavy-duty design, making it suitable for larger moving doors where alignment and durability are important. Installation Notes The reed switch and magnet should be mounted securely and aligned correctly to ensure reliable open/close detection. The stainless steel armoured leads help protect the wiring near the contact, making the unit better suited to commercial and industrial-style installations. Installation should be completed by a licensed security installer or a competent technician familiar with alarm zone wiring and normally closed circuit configuration. Frequently Asked Questions What is the RDRS-NC used for? It is used to monitor roller shutters, garage doors and similar openings as part of a hardwired alarm system. Is the RDRS-NC normally closed? Yes. The RDRS-NC has a normally closed output. What is the operating gap? The specified gap is 50–60mm. What are the contact dimensions? The contact measures 106 x 38 x 10mm. What are the magnet dimensions? The magnet measures 106 x 16 x 16mm. Does it have protected leads? Yes. The RDRS-NC includes 480mm stainless steel armoured cover leads with 22AWG wire.