intelligent CO sensor

carbon monoxide alarm with colorimetric sensor direct from Wanlin Fire Protection — 12-year factory experience, WL-CO802 fully certified UL 2034/EN 50291/CE/FCC/RoHS/REACH. Key specs: 4G LTE Cat.1 + WiFi + RF 433MHz, Photoelectric Smoke + Electrochemical CO Dual Sensor, 10-year sealed lithium battery. MOQ 100 units, 25-30 working days, OEM/ODM custom brandi···