Wolf Guard 433MHz MC 03B Door Window Sensor for Home System,Power Switch,Emergency Button

COMPACT SIZE: Big sensor measures 3"X1"X0.5", small magnetic bar measures 2.3"X0.5"X0.3" POWERFUL BATTERY: Built-in DC3V CR2032 lithium battery lasts for over 2 years of continuous operation BOX CONTENT: Package includes 1 transmitter and 1 magnetic bar, 2 adhesive sticks, and 1 instruction manual EASY INSTALLATION: Simply peel the sticker and stick it to your door or window, ensuring the small magnetic bar is aligned to the right and bottom of the larger sensor SENSITIVE DETECTION: Works with home alarm systems and sends alarm signal to control host once the door or window opens only 15mm WIRELESS TECHNOLOGY: Operates on 433.92MHz frequency with 80M emitting distance without obstacles for reliable signal transmission VERSATILE APPLICATION: Ultra-thin modern design suitable for various kinds of doors and windows throughout your home, Weight: 0.0661386786 pounds, Manufacturer: ChiTongDa