Smart Shield Systems
2GIG’s Wireless Smoke/Heat/Freeze Alarm
Protect your home with a single life-safety sensor that detects smoke, excessive heat, and freezing temperatures. 2GIG’s wireless combo alarms use a photoelectric smoke chamber plus fixed 135°F + rate-of-rise heat and freeze (≈41°F) monitoring, reporting instantly to your security panel and the Alarm.com app. Newer eSeries (SMKT8e-345) models add encrypted signaling and updated UL-2020 performance; the classic SMKT3-345 remains a proven option for 2GIG 345-MHz systems.
Why Choose This with Smart Shield Systems
- We match the right version: SMKT8e-345 (encrypted) for GC2e/GC3e/EDGE, or SMKT3-345 for legacy 345-MHz panels and compatible hubs.
- Pro programming: we enroll separate loops for smoke (Loop 1), heat (Loop 2), and freeze (Loop 3) so each event is labeled and responded to correctly.
- Code-compliant placement & testing: we follow NFPA-72 guidance, perform functional/sounder tests, and set maintenance reminders.
- Ongoing care: battery swaps, sensor cleaning guidance, and annual walk tests.
Key Features
- Three protections in one: photoelectric smoke, 135°F fixed + 15°F/min rate-of-rise heat, and freeze ≈41°F alerts.
- Loud local alert: integrated sounder with ≥85 dB @ 10 ft (SMKT8 series spec) using the standard Temporal-3 pattern.
- Wireless range: up to ~350 ft open air (series spec; site-dependent).
- Supervision & tamper: reports low battery, tamper, and supervisory signals for reliability.
- Meets newer UL smoke performance on SMKT8/SMKT8e (2020-class algorithms that reduce cooking nuisance trips).
Compatibility Notes
- Panels: SMKT3-345 pairs with legacy 2GIG 345-MHz systems and many 345-compatible hubs; SMKT8e-345 is for GC2e/GC3e/EDGE (encrypted). The 2GIG EDGE supports current 2GIG smoke/heat sensors.
- Zoning: enroll smoke/heat/freeze on separate loops so each event is identified in history and notifications.
- Not a CO detector: add a dedicated carbon monoxide sensor for CO hazards.
Popular Use Cases
- Hallways outside bedrooms and common living areas per NFPA-72 guidance.
- Mechanical/laundry areas: benefit from heat and freeze alerts in addition to smoke.
- Vacation homes: freeze alarms help catch HVAC failures before pipes burst.
Frequently Asked Questions
2GIG splits functions into three loops: Loop 1 = Smoke, Loop 2 = Heat, Loop 3 = Freeze. Your panel treats each loop as its own zone and alert type.
Typical specs: Heat at 135°F fixed or 15°F/min rate-of-rise; Freeze at ≈41°F (5°C). Smoke uses a photoelectric chamber with on-board algorithms. (Exact thresholds vary slightly by model.)
The SMKT3-345 uses 3× AAA alkaline; newer SMKT8/SMKT8e models may differ. We install fresh batteries and note replacements in your maintenance plan.
Yes—SMKT3-345 for 345-MHz systems; SMKT8e-345 for GC2e/GC3e/EDGE (encrypted). We’ll verify radio type and enroll the right model.
Series spec lists ≥85 dB at 10 ft (SMKT8). We test sounder volume during commissioning.
Additional Resources
Download ManualReady for Pro-Grade Life Safety?
Smart Shield Systems will specify the correct 2GIG Wireless Smoke/Heat/Freeze Alarm, enroll all three loops, place sensors to code, and set up Alarm.com alerts—so you get fast, reliable protection day and night.