Welcome to our store！</br>1、Features 6cm action distance, and the wireless transmission distance is up to 80 meters. 2、Used to detect rolling door if it is opened or moved, high sensitivity, which is reliable to use. 3、It has a wide range of applications, this door magnetic is suitable for rolling gates. 4、The installation is simple and does not require complicated operations. 5、Made of high quality iron material, rugged, anti-corrosion and durable. <p class="wang-edit-text"><p class="wang-edit-text">Item Type: Rolling Door Magnetic Sensor Material: Iron Scope of Application: Rolling Gate Action Distance: Approx. 6cm/2.4in Wireless Transmission Distance: Approx. 80 meters/262.5ft <style> .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }</style> 1 x Remote Control 1 x Door Magnetic Sensor&nbsp; 4 x Screws 2 x Hook&amp;Loop Satisfaction - Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactoryaftersalesservice</br>