GRI 28B-B Surface Mount Magnetic Reed Switch Set, Brown, Open Loop, Standard Gap Up to 1", Concealed Terminals, Brown
Special Order: typically 2–6 weeks
Ships directly from the manufacturer. This is an estimated lead time, not a guaranteed delivery date.
Availability can change and lead times may be longer. If your project has a deadline, check with us before ordering.
A member of our team will check with the manufacturer and personally reply by email.
Image of 1
Key Features
- Reliable intrusion monitoring with hermetically sealed reed switch for dependable security performance
- Concealed screw terminals and plated contacts reduce tampering and resist sticking/freezing in harsh environments
- Surface-mount design with up to 1" standard gap for fast installation on doors and windows, minimizing retrofit headaches
- Brown finish blends with wood and frame finishes to preserve aesthetics on commercial and residential sites
- Lifetime limited warranty from George Risk Industries provides long-term confidence and lower total cost of ownership
Quick Specifications
- Product Model
- 28B-B
- Brand Name
- George Risk Industries
- Manufacturer Part Number
- 28B-B
Explore the details
Product information
28B-B
Overview
Built for dependable intrusion detection and easy installation, the GRI 28B-B by George Risk Industries is a surface-mount magnetic contact designed for security, surveillance and monitoring systems. This magnetic contact (reed switch) delivers reliable switch activation with a standard gap of up to 1", concealed screw terminals for tamper resistance, and hermetically sealed construction that resists moisture and corrosion. Plated contacts minimize sticking or freezing, keeping circuits stable in cold or challenging environments — ideal for commercial doors, windows and industrial enclosures.
The brown housing blends discreetly with wood frames and darker finishes while the surface-mount footprint and included spacers and hardware speed field installs and retrofits. Whether you need a dependable door contact for an access control panel or a supervised loop for alarm monitoring, the 28B-B balances durability and simplicity. Backed by George Risk Industries' lifetime limited warranty, it lowers long-term maintenance and replacement costs. Add the GRI 28B-B to your next security or surveillance project for straightforward, professional-grade monitoring — order now or contact us for volume or custom options.
Features
- Reliable intrusion monitoring with hermetically sealed reed switch for dependable security performance
- Concealed screw terminals and plated contacts reduce tampering and resist sticking/freezing in harsh environments
- Surface-mount design with up to 1" standard gap for fast installation on doors and windows, minimizing retrofit headaches
- Brown finish blends with wood and frame finishes to preserve aesthetics on commercial and residential sites
- Lifetime limited warranty from George Risk Industries provides long-term confidence and lower total cost of ownership
| General Information | |
|---|---|
| Brand Name | George Risk Industries |
| Manufacturer Part Number | 28B-B |
| Physical Characteristics | |
| Color | Brown |
| Warranty | |
| Limited Warranty | Lifetime Warranty |
| Miscellaneous | |
| Features | 24" #22AWG 2 conductor jacketed lead on 29PA, Built in E.O.L. Resistors and Diodes upon request, Colors- white, brown and gray, Concealed screw terminals on 28 series, Covers, spacers and mounting hardware included, Hermetically sealed, Longer leads on 29PA upon request, Plated contacts resist sticking or freezing, Private labeling upon request, Screw down flanges, Side screw terminals on 29 series, Supervisory loops and dummy terminals upon request, Surface mount magnetic contact, Switches and Magnets available separately, This versatile series sets the Industry Standard for Commercial and Light Industrial applications |
| Country of Origin | US |
No matching specifications
Try a different term, such as a connector type or resolution.
Plan your purchase
Is this right for your project?
Confirm the model, required accessories and delivery needs before ordering.
- SKU:
- 28B-B
- Manufacturer part:
- 28B-B
How do I confirm compatibility?
Check the specifications and manufacturer documents for your existing system. Send us your model numbers and project requirements if you need help selecting equipment or accessories.
Ask a product specialistWhen will this item ship?
Availability is shown above. Special-order items and project quantities may need additional lead time. Contact us to confirm a delivery date before scheduling installation.
Shipping, freight and delivery detailsWhat should I know about returns?
Returns require an approved RMA. Consult the linked return policy for deadlines and eligibility. For standard non-defective returns, eligible factory-sealed items carry a 15% restocking fee and customer-paid return shipping; open-box and used items are refused. Defective and DOA claims follow the policy's separate terms. Special orders and other exclusions are final sale.
Read return eligibility and exclusionsGRI 28B-B Surface Mount Magnetic Reed Switch Set, Brown, Open Loop, Standard Gap Up to 1", Concealed Terminals, Brown
28B-B