top of page
Smart Shield Systems logo
PowerG 2-Way Wireless Magnetic Contact

Smart Shield Systems

PowerG 2-Way Wireless Magnetic Contact

The PowerG PGx945 series is a professional wireless door/window contact with a built-in reed switch and a programmable hard-wired auxiliary input—perfect when a magnet isn’t practical or you want to bring an existing wired contact into your wireless system. It communicates using PowerG (AES-128, frequency-hopping), includes case & back (wall) tamper, and provides on-device link-quality LEDs to speed up installs. Typical battery life is up to 8 years.

Why Choose This with Smart Shield Systems


  • Flexible installs: we’ll use the aux input (NO/NC/EOL) when a magnet gap won’t meet spec or to convert a wired contact—cleanly enrolled and labeled.

  • Signal verified on the spot: we use the device’s Placement Test and LED strength indicator to ensure GOOD/STRONG PowerG signal before we leave.

  • Code-aware mounting: we set the back tamper, use screws where required, and align the magnet within the 6 mm (0.24″) gap limit for reliable detection.


Key Features


  • Reed switch + hard-wired input (program as NO / NC / Single EOL 47 kΩ). The reed and aux input behave as separate transmitters for clean zoneing.

  • PowerG wireless with AES-128, frequency-hopping, adaptive power, and supervision (4-minute heartbeat).

  • On-device link-quality LEDs and enroll button for quick commissioning.

  • Case & back tamper, low-battery reporting.

  • Long battery life (typical 8 years, CR123A).

  • Color options: PG9945 (white), PG9945BR (brown).


Product Specifications (At-a-Glance)


  • Models / Bands: PG9945 (FCC/IC/UL/ULC 912–919 MHz), PG8945 (868 MHz), PG4945 (433 MHz).

  • Magnet gap: ≤ 6 mm (0.24″) at the marked reed-switch side.

  • Battery: 3 V CR123A lithium; up to 8 years typical.

  • Supervision: status signaling every ~4 minutes; automatic low-battery transmission.

  • Dimensions / Weight: 81 × 34 × 25 mm (3-3/16″ × 1-1/4″ × 1″); ~53 g.

  • Aux input: NO / NC / EOL (47 kΩ); max cable length 10 m (22 AWG).

  • Tamper: case & back tamper (back tamper mandatory for UL/ULC fire/commercial burglary).


Compatibility Notes


  • Works with PowerG-capable panels (e.g., Qolsys IQ Panel 4 / IQ Pro, DSC PowerSeries Neo, etc.).

  • Aux input can be enrolled as a separate zone for clean system logic.

  • For UL/ULC Residential Fire applications, the aux input may be used with listed mechanical heat detectors mounted within 3 ft, with specific programming (zone type, supervision, EOL). We handle these settings when required.


Popular Use Cases


  • Standard doors & windows: low-profile perimeter protection with verified signal strength.

  • Hard spots / metal frames: use the aux input to land a wired recessed contact while keeping wireless on the panel side.

  • Heat-detector tie-in (UL/ULC scenarios): approved wiring/programming for Residential Fire where appropriate.


Frequently Asked Questions


What’s the maximum magnet gap?


6 mm (0.24″) at the marked side of the transmitter. We align the magnet mark to the case mark during install.


Can I bring a wired contact into this sensor?


Yes—the aux input supports NO, NC, or Single-EOL (47 kΩ) and can be enrolled as its own zone.


How long does the battery last?


Real-world life is up to ~8 years on a CR123A with typical use; the sensor reports low-battery automatically.


Is there a back (wall) tamper?


Yes. The base has a break-away wall segment for back tamper, which is required in certain UL/ULC installs.


How do you verify signal strength?


We use the device’s Placement Test mode—the LED blinks to show POOR/GOOD/STRONG so we can reposition if needed. (For UL/ULC, STRONG is required.)


Which variant do I need?


  • PG9945 (North America, 915 MHz class),

  • PG8945 (868 MHz regions),

  • PG4945 (433 MHz regions).We’ll choose the version that matches your panel/market.


Ready for flexible, reliable perimeter protection?


Smart Shield Systems will mount, align, and enroll your PGx945 contact, configure the aux input if needed, test tamper and supervision, and document everything—so your doors and windows report perfectly from day one.

Additional Resourses

Proudly Serving All of San Diego

Address: 9655 Granite Ridge Dr Suite 200, San Diego, CA 92123
Phone: (844) 477‑7627
Email: office@smartshieldsystems.com

Smart Shield Systems is deeply embedded in the San Diego community and exclusively serves residential and commercial clients within the San Diego area.

Our expert team installs advanced security systems - including alarms, surveillance, smart locks, automation, and wellness monitoring - across neighborhoods such as La Jolla, North Park, Carmel Valley, Mira Mesa, Pacific Beach, University City, Scripps Ranch, Kearny Mesa, Mission Valley, and more.

Let’s start a conversation

Book Your Free Consultation call Now

Home or Commercial?

Contact us:

(844) 477‑7627

9655 Granite Ridge Dr Suite 200, San Diego, CA 92123

bottom of page