Interstate Engineering Recalls MasterGuard, Responsive, and Rescue II Heat Detectors
Interstate Engineering is recalling about 40,000 heat detectors that may fail to alarm or alarm too briefly during a fire. Consumers should stop using them and contact Tri Star Enterprises for a free replacement.
What this means for you
Our assessment, not the agency’s: severity 3/5 (High).
Real risk of harm even if no illness or injury has been reported yet. Stop using the product and follow the agency's guidance.
Our severity reasoning: The recall involves a fire safety device that may fail to alarm during a fire, representing a risk-of-harm product where injury has not yet been reported, which aligns with the High severity criteria.
Plain-English summary
Interstate Engineering, in cooperation with the U.S. Consumer Product Safety Commission (CPSC), is voluntarily recalling approximately 40,000 heat detectors. The affected units are mechanical, round, off-white aluminum devices roughly 7 inches in diameter and 3 inches high, featuring a brass-colored metal disk at the center. They do not use batteries or electricity. The recall covers three private label models: MasterGuard model MG-50/70, Responsive model TRI70, and Rescue II model R-50FT. These units have serial numbers ranging from 980400001 through 981108112 located on the label beneath the removable mounting bracket.
The recall is being issued because the heat detectors can fail to alarm or alarm for a shorter period of time than intended when fire is present. Interstate Engineering and CPSC are aware of one incident where a heat detector failed to operate properly during a retail demonstration. Subsequent testing by Interstate Engineering identified approximately 38 additional failures. CPSC is not aware of any failures during use by consumers, and no injuries have been reported.
The heat detectors were sold nationwide primarily through in-home demonstrations and sales parties from May 1998 through December 1998 for about $225 or higher. Prices were determined by Interstate Engineering's private label resellers. Consumers should stop using these heat detectors immediately and call Tri Star Enterprises at (800) 854-6185 for a free replacement. CPSC reminds consumers that heat detectors are intended to supplement smoke detectors and should not be relied upon as substitutes for smoke detectors.
The recalled product
- Product
- MasterGuard heat detectors
- Manufacturer
- MasterGuard
- Hazard
Distribution
Distributed nationwide across the United States.
Related recalls
Same hazard · fire
See all →- SevereVQQQ Gas Patio Heaters Recalled for Fire and Burn Hazards
CPSC · 2026-10-22
- HighAutocar Recalls Xpeditor Trucks for Fuel Hose Separation Risk
NHTSA · 2026-10-21
- SevereAudi Recalls 2024-2025 Q4 E-Tron Models Due to Battery Fire Risk
NHTSA · 2026-10-21
- HighForest River Recalls 2023-2026 Pause Travel Trailers for Wiring Defect
NHTSA · 2026-10-20
- SevereForest River Recalls 2026-2027 Cedar Creek Trailers for Fire Risk
NHTSA · 2026-10-16
Similar recalls
- HighEdwards Recalls Mechanical Heat Detectors Due to Fire Alert Failure
CPSC · 2020-06-17
- HighIntermatic Temperature Tender Heating Units Recalled for Fire Risk
CPSC · 1979-08-16
- SevereHolmes Wide-Angle Portable Heaters Recalled for Fire Hazard
CPSC · 1999-10-21
- HighChemetronics Caribe Recalls Stargard AT Dual Contact Heat Detectors
CPSC · 1997-07-28
- Severe
- High