Heiman HM-733NS Natural Gas Detector: Providing 10 Years of Safety for Your Home
The Heiman HM-733NS Natural Gas Detector redefines home safety with a 10-year battery life, early warning capabilities, and tool-free installation. It's not just a detector—it's your long-term safety partner that saves you time, money, and worry.
Unbeatable Cost-Efficiency
Year Pure Battery Power
Say goodbye to high electricity bills and complex wiring costs. The HM-733NS features a 3V lithium battery (built-in long-lasting type), reducing total cost of ownership by up to 75% compared to plug-in models. No electrician visits required, no hidden fees—enjoy a decade of safety assurance with a single purchase.
Expected 10-Year Lifespan
Built with high-quality components and low-power technology, the detector delivers stable performance with a lifespan of up to 10 years, eliminating the need for frequent replacements. It represents a cost-effective choice for ensuring long-term home security.
Superior Safety for Peace of Mind
7% LEL Early Alert
Equipped with a high-sensitivity, low-power MEMS sensor, the detector triggers an alarm when methane concentration reaches 7% of the lower explosive limit (LEL)—significantly earlier than standard detectors. This early warning provides ample time to shut off gas valves and ventilate the area, effectively preventing explosion or poisoning risks.
24/7 Protection, No Power-Outage Risk
Battery-powered design ensures continuous operation even during power outages—when gas leaks are often more easily overlooked. Paired with a high-decibel alarm exceeding 85 dB, it immediately alerts everyone in the home, nipping danger in the bud.
Low Battery Warning
When battery power is low, the detector will automatically issue a low-battery alert, keeping you informed of the device's status at all times—ensuring uninterrupted safety protection.
Hassle-Free Installation in 3 Minutes
No wiring, no outlets, no special skills required. Simply use a Phillips screwdriver to mount the detector within 12 inches of the ceiling—the optimal position for gas detection—all installation hardware included in the package. Easy for both renters and homeowners to install.
Latest Industry Compliance
Strictly complies with the latest UL 1484 6th Edition and NFPA 715 standards, and is FCC certified. It also holds UL 2075 certification for residential natural gas/methane detection, ensuring reliable performance and full compliance with U.S. safety regulations.