Smart Shield Systems
Recessed Door/Window (DW20R)
Make your contact invisible. The 2GIG-DW20R-345 is a recessed wireless door/window sensor that hides in the frame, keeping your trim clean while providing supervised, reliable protection on 345 MHz. A rare-earth magnet, long-life CR2032 battery, and strong open-air range make it a favorite for front doors and casements alike.
Why Choose This with Smart Shield Systems
- Pro drilling & alignment: We drill the correct 11/16″ bore, set the proper depth, and align magnet/sensor for dependable trips.
- Clean, discreet finish: Recessed install with the right cap style and paint-safe placement so hardware disappears.
- Panel programming done right: We enroll, label, and test supervision/tamper/low-battery reporting in your 2GIG/Alarm.com system.
- Security options: Want encryption? We can spec the encrypted eSeries version for supported panels.
Key Features
- Recessed, low-profile install with rare-earth magnet and two cap styles for a tidy, hidden look.
- Long wireless reach: up to ~450 ft open-air to a 2GIG panel (indoor placement recommendations apply).
- Supervised contact: reports alarm/restore, supervisory, and low-battery events to the panel.
- 5-year battery life (typical) using a CR2032 lithium coin cell.
- ETL listed for compliance.
Product Specifications (At-a-Glance)
- Model: 2GIG-DW20R-345 (recessed door/window contact)
- Frequency / Modulation: 345.000 MHz, ASK-OOK; ~70-min supervisory interval.
- Range: ~450 ft open-air (plan for shorter indoor distances).
- Battery: CR2032 3 V lithium; up to ~5 years typical.
- Dimensions (sensor): ≈2.57″ × 0.75″; magnet ≈ 0.5″(H) × 0.75″(D).
- Magnet gap / sensitivity: 0.625″ min (typ.), ~0.85″ typical trip.
- Environment: 32–104°F (0–40°C); 5–95% RH, non-condensing.
- Bore / drilling: 11/16″ bit; typical depths ~2.6″ frame and ~0.5″ door (follow install guide).
Compatibility Notes
- Works with 2GIG 345 MHz panels and other systems that accept 2GIG-345 sensors; plan indoor placement ideally ≤100 ft from the receiver for best reliability.
- Encrypted eSeries recessed version is available for newer 2GIG “e” panels. We’ll recommend the right model for your system.
Popular Use Cases
- Front/back doors where you want hardware completely hidden
- French doors & casements with clean trim lines
- Windows where surface contacts would be visible
Frequently Asked Questions
The install guide calls for an 11/16″ bore. Typical depths are ~2.6″ into the frame and ~0.5″ into the door; we measure your door/frame and follow the manual for a snug fit.
Spec is ~450 ft open-air; indoor range varies with construction. We perform an RF test after enrollment and aim for ≤100 ft to the receiver when possible.
A CR2032 coin cell, commonly rated up to ~5 years under normal use. Your panel/app will alert on low battery.
Yes—DW20R is a standard recessed reed contact. Follow the magnet gap spec (≥0.625″ min / ~0.85″ typical) and correct alignment.
Yes. The encrypted eSeries recessed contact is available for supported 2GIG panels; we’ll use it when your system supports encryption.
Additional Resources
Download ManualReady for a Truly Hidden Contact?
Smart Shield Systems will drill, align, and enroll your Recessed Door/Window (DW20R), verify supervision and event reporting, and keep your trim pristine—security you don’t see, but always feel.