Natural Gas Leak Detector and Carbon Monoxide Detectors - 4 in 1 Natural, Propane, Co & Gas Leak Detector - Carbon Monoxide Detectors Plug in - Temperature & Humidity Detectors for Home, RV (3 Packs)Brand: NORJAN Color: Black Features: 3 Packs Enhanced 4 in 1 Detector: This advanced 4 in 1 device combines detectors for natural gas, carbon monoxide, temperature, and humidity. Featuring robust functionality, dual sensors, a dual alarm system, and rapid response capabilities, it provides comprehensive protection for your family and ensures safety from multiple angles. Fast Response & Dual Alarm System: This RV carbon monoxide detector features a