Safe and stable: Fireproof ABS flame retardant shell, solid and durable.Excellent performance, high safety, strong work stability, you can buy with confidence Sound and light alarm - When the alarm is triggered, the wired flash strobe alarm will give a high volume alarm, and the flashing light will remind the user. Portable and energy efficient: No radiation, environmental protection and cost-effective. Small and portable, easy to use and Small and exquisite, carry it with you when you go out. Easy to install: very practical, economical, complete configuration and easy to use, the installation process is easy and convenient, saving you time and effort. Quality Assurance: Our products have been rigorously tested. If you have any problems after purchase, you can always ask them and we will solve them as soon as possible.