Smart Shield Systems
2GIG Passive Infrared Motion Detector
A reliable, wide-angle wireless PIR motion detector for everyday intrusion protection. The 2GIG-PIR1-345 communicates on 345 MHz, covers 30 ft × 50 ft (≈90°), offers selectable pet immunity (33 lb or 55 lb), and is fully supervised for tamper and low-battery events—ideal for living areas, hallways, and offices

Why Choose This with Smart Shield Systems
- Right placement, right sensitivity: we mount at the recommended ~7.5 ft and set High/Low sensitivity and pet weight to match your space.
- Clean enrollment & testing: full walk-tests, supervision checks, and labeled zones so alerts are dependable.
- Ongoing support: battery replacements, range checks, and false-alarm reduction tips.
Key Features
- Wide area coverage: 30 ft deep × 50 ft wide with ~90° horizontal sensing.
- Pet-immune options: choose 33 lb or 55 lb modes to reduce false trips.
- Long wireless reach: up to ~350 ft open-air to the control panel (site-dependent).
- Supervised & secure: reports alarm/restore, tamper/restore, supervisory, low-battery.
- Simple power: 1× CR123A 3 V lithium battery (multi-year life under typical use).
Product Specifications (At-a-Glance)
- Model: 2GIG-PIR1-345 (wireless PIR)
- Frequency: 345.000 MHz (crystal-controlled); supervisory interval ~70 min
- Coverage / Optics: 30 ft × 50 ft, ~90° horizontal
- Pet Immunity: 33 lb or 55 lb (selectable)
- Sensitivity: High / Low (jumper)
- Suggested Mounting Height: 7.5 ft (2.3 m)
- Open-Air RF Range: ~350 ft
- Power: 1× CR123A 3 V lithium
- Environment: 32–120 °F (0–49 °C); 5–90% RH (non-condensing)
- Size / Weight: 3.2 × 2.5 × 1.9 in, ~3.7 oz with bracket/battery
Compatibility Notes
- Works with 2GIG 345 MHz control panels and many systems that accept 2GIG-345 sensors; we verify panel radio and RF range during install.
Popular Use Cases
- Living rooms & family rooms with cross-room coverage
- Hallways & stair landings that watch traffic between zones
- Office/showroom interiors where pet immunity helps avoid false alarms
Frequently Asked Questions
About 7.5 ft (2.3 m) for best coverage and pet-immunity performance.
You can select 33 lb or 55 lb pet-immune modes. We’ll choose the right setting and angle the sensor to avoid pet pathways.
It sends a supervisory signal roughly every 70 minutes, plus alerts for tamper and low battery.
A CR123A 3 V lithium cell with multi-year typical life; your panel/app will warn when it’s low.
Open-air spec is ~350 ft; actual range depends on construction and panel placement. We perform a walk-test and RF check during installation.
Additional Resources
Download ManualReady for Reliable Motion Coverage?
Smart Shield Systems will specify, place, and enroll your 2GIG-PIR1-345, tune sensitivity/pet immunity, and test everything—so you get dependable detection without nuisance alarms.