combination smoke and CO alarm with 10 year sealed battery

Wanlin Fire Equipment by Wanlin - China's leading source manufacturer of combination smoke and CO alarm with 10-year sealed battery. Photoelectric smoke sensor + electrochemical CO sensor, 10-year sealed battery, voice alert, smart app options, OEM/ODM. ISO 9001. CE FCC RoHS UL EN14604 certified. Contact +8613261677119.