ขาย เซนเซอร์ประตูหน้าต่างไร้สาย 433MHz สําหรับ Wifi Gsm Home Android Ios App 2 ชิ้น ราคาที่ดีที่สุด

1. This product needs to be used with the host and cannot be used alone 2. Wireless door and window detector. Intelligent perception monitors whether each door and window is opened in real time. 3. The working principle of the door sensor alarm: When someone opens the door and window, the alarm immediately sends a signal to the host, and the host immediately sounds an alarm and sends an alarm to the user's mobile phone. 4. New design concept: small size, light weight, perfectly integrated into the home environment. 5. Low power consumption design: energy-saving and power-saving, powered by 2 AAA batteries, with a service life of more than 2 years. Transmitting distance design: Based on RF433 wireless communication technology, superior wall penetration capability, the transmission distance can reach 200~300m in an open and interference-free environment. Widely compatible design: Built-in 433MHz wireless ule, fully compatible with various 433MHz alarm hosts in the market. Colour:white Material:ABS Size:7x7x3cm Package Contents: 2 x door magnetic sensors 2 x magnetic edgesOnly the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.