2GIG’s Wireless Smoke/Heat/Freeze Alarm

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).

Product Specifications (At-a-Glance)

SMKT3-345 (Classic 345-MHz)

• Power: 3× AAA alkaline batteries.

• Radio: 345 MHz; Loops: 1=Smoke, 2=Heat, 3=Freeze.

• Coverage: manufacturer literature cites ~35–39 ft area for smoke chamber (room/layout dependent).

SMKT8-345 / SMKT8e-345 (Updated / Encrypted)

• Power: (varies by vendor lot; alkaline) — we stock SMKT8(e) models meeting UL-2020 performance improvements.

• Radio: 345 MHz (SMKT8 works with 2GIG panels; SMKT8e requires GC2e/GC3e/EDGE).

• Sounder & size: ≥85 dB @10 ft; approx. 4.7″ × 1.8″ (D × H).

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

How is one device “three sensors”?

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.

What are the actual trigger points?

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.)

How long do the batteries last and which type is used?

The SMKT3-345 uses 3× AAA alkaline; newer SMKT8/SMKT8e models may differ. We install fresh batteries and note replacements in your maintenance plan.

Will it work with my panel?

Yes—SMKT3-345 for 345-MHz systems; SMKT8e-345 for GC2e/GC3e/EDGE (encrypted). We’ll verify radio type and enroll the right model.

How loud is the alarm?

Series spec lists ≥85 dB at 10 ft (SMKT8). We test sounder volume during commissioning.

Ready 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.