Resideo 7939WG-BR MPS20 Surface Mount Magnetic Contact with Terminals, 1-1/4" Gap, SPST, Brown
Image of 2
Key Features
- Reliable perimeter detection with a Normally Closed SPST reed switch for consistent security monitoring
- Surface-mount design with included spacers, cover and screws for fast, tool-friendly installation
- 1-1/4" standard gap gives flexible placement on doors and windows for residential and light-commercial sites
- Concealed end-of-line (EOL) resistor simplifies wiring and maintains a clean, tamper-resistant appearance
- Durable operation down to -40°F and a discreet brown finish that blends with wood frames and trim
Quick Specifications
- Product Model
- 7939WG
- Brand Name
- Resideo
- Product Name
- 7939WG Magnetic Contact
- Product Type
- Magnetic Contact
Explore the details
Product information
7939WG-BR
Overview
Protect doors and windows with a dependable, easy-to-install magnetic contact designed for everyday security monitoring. The Resideo 7939WG-BR magnetic contact provides reliable closed-circuit detection using a SPST (Normally Closed) reed switch and a roomy 1-1/4" standard gap—ideal for varied mounting offsets on residential or light-commercial openings. Its surface-mount form factor ships with spacers, cover and screws so you can deploy sensors quickly, using screws or double-sided adhesive for hybrid installation. The cover conceals the end-of-line (EOL) resistor for neat wiring and improved tamper resistance, and the brown finish blends into wood doors and frames for discreet surveillance. Rated to operate to -40°F and built for wired security systems, this contact supports series wiring on a single zone and integrates easily with alarm panels for perimeter protection and monitoring. Choose the Resideo 7939WG-BR when you need a low-voltage sensor that balances reliability, simplicity and a clean aesthetic—order now to strengthen your security and surveillance setup.
Features
- Reliable perimeter detection with a Normally Closed SPST reed switch for consistent security monitoring
- Surface-mount design with included spacers, cover and screws for fast, tool-friendly installation
- 1-1/4" standard gap gives flexible placement on doors and windows for residential and light-commercial sites
- Concealed end-of-line (EOL) resistor simplifies wiring and maintains a clean, tamper-resistant appearance
- Durable operation down to -40°F and a discreet brown finish that blends with wood frames and trim
| General Information | |
|---|---|
| Brand Name | Resideo |
| Manufacturer | Resideo |
| Product Name | 7939WG Magnetic Contact |
| Product Type | Magnetic Contact |
| Product Model | 7939WG |
| Manufacturer Part Number | 7939WG-BR |
| Technical Information | |
| Contact Form | Form A |
| Standard Gap | 1.26" |
| Application/Usage | Security System Sensors |
| Connectivity Technology | Wired |
| Environmental Conditions | |
| Minimum Operating Temperature | -40°F |
| Physical Characteristics | |
| Color | Brown |
| Width | 0.5" |
| Height | 0.5" |
| Power Description | |
| Power Source | DC Adapter |
| Input Current | 300mA |
| Input Voltage | 30V DC |
| Product Information | |
| Length | 2.5" |
| Mount Type | Surface Mount |
| Switch Type | Reed Switch |
| Contact Type | Normally Closed, SPST |
| Installation Type | Hybrid |
| Miscellaneous | |
| Features | Ideal for residential or commercial use |
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:
- 7939WG-BR
- Manufacturer part:
- 7939WG-BR
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 exclusionsYou May Also Like
Resideo 7939WG-BR MPS20 Surface Mount Magnetic Contact with Terminals, 1-1/4" Gap, SPST, Brown
7939WG-BR