Products from the USA may come with an input voltage of 110V–120V, requiring a step-down transformer. Check the device wattage to select the correct power converter.
•The listing include one pc Wireless Interconned Smoke Alarm and one pc Wireless Interconned Carbon Monoxide Detectors
•It can interconnect with smoke and carbon monoxide detectors; when one device triggers an alarm, all devices will sound. It includes a battery that lasts for 10 years and requires no Wi-Fi or wiring. You can achieve whole-house connectivity to ensure your safety.
•The Smoke alarm and CO alarm have UL Certified, no need worry for your safety
