Smart Shield Systems
IQ Mini DW-S
A tiny, encrypted contact for doors, windows, cabinets, and more. The IQ Mini DW-S uses S-Line secure 319.5 MHz signaling to your IQ Panel, delivers fast open/close alerts, and supports handy automations like “turn on the light when the door opens” or “notify me if a window is left open.” Despite its size, it offers long range and up to eight years of battery life.

Why Choose This with Smart Shield Systems
- Discreet & dependable surface-mount sensor with a rare-earth magnet for flexible installs.
- Secure S-Line encryption with backward compatibility for legacy 319.5 MHz systems.
- Automations & alerts set up for you (e.g., door-left-open texts, scene triggers).
- Professional placement & testing from Smart Shield Systems for rock-solid performance.
Key Features
- Ultra-compact contact for anything that opens/closes; includes rare-earth magnet.
- Long range: up to ~600 ft (open air) to the panel with supervised check-ins.
- Battery life: marketing rated up to eight years; panel supervises low battery.
- Programmable as a Safety Sensor for cabinets, safes, or chemical storage.
- On-device tamper; panel reports tamper/restore, alarm/restore, low battery.
Product Specifications (At-a-Glance)
- Models / Colors: QS1135-840 (white), QS1136-840 (brown).
- Dimensions (sensor): 2.25″ H × 1.0″ W × 0.5″ D.
- Radio / Protocol: 319.5 MHz S-Line; open-air range ~600 ft; supervisory ~70 min.
- Power: (2) CR2032 3 V lithium; replace with exact type about every 5 years (Panasonic/Energizer/Duracell).
- Operating environment: 14–122 °F (-10–50 °C); 5–95% RH non-condensing; storage -40–176 °F (-40–80 °C).
- Magnet gap guidance: ≤ 3/4″ when aligned to the locator mark.
Compatibility Notes
- Works with IQ Panels that use 319.5 MHz (S-Line encryption on compatible IQ models; unencrypted on legacy 319.5 MHz systems).
- Confirmed compatible with IQ Panel 4 variants that include a 319.5 MHz radio. We’ll verify your exact panel/firmware.
Popular Use Cases
- Main entry, back, and side doors
- Casement or double-hung windows
- Medicine cabinets, closets, and drawers set as Safety zones (with alerts/automations).
Frequently Asked Questions
Mount the sensor on the fixed frame and the magnet on the moving part; keep the gap ≤ 3/4″ and align to the sensor’s locator mark. We’ll verify with a live test after enrollment.
It uses two CR2032 coin cells. The product page rates life up to eight years; best practice is to replace with the exact type about every 5 years (your panel will alert for low battery).
Listed open-air range is ~600 ft; real-world range varies with construction. We confirm signal strength during installation.
Yes—using Alarm.com rules, we can enable left-open alerts and automations like turning on lights or adjusting the thermostat when a door/window opens.
If your system supports 319.5 MHz sensors, yes. We’ll confirm your panel’s radio and firmware (e.g., IQ Panel 4 with 319.5 MHz card) during your quote.
Additional Resources
Download ManualReady for Clean, Compact Perimeter Protection?
Smart Shield Systems will place, enroll, and test your IQ Mini DW-S, set up chimes and notifications, and tie it into your scenes—so you always know what’s open, closed, or left ajar.