Gas Detector, 4 Gas Alarms for CO, O2, H2S and LEL, Multi Gas Leak Detector (Vibration, Visual, Audible) with High Sensitive Sensor, Rechargeable Gas Monitor with 16H Long Battery Life, IP65

VIOIPUDOL Smoke Detector, Battery-Powered Fire Alarm with LED Indicator, Portable Smoke Alarm for Home Kitchen Bedroom Safety, 4 Packs