Fangrui Product Details Receive Real-time Alarms Remotely,when Someone Illegally Opens The Door Or Window(door Magnet And Magnetic Stripe Separation) The Sensor Push Instant Notification To Your Smartphone Immediately.alarm Can Be Issued 130db Alarm Sound, To Avoid Thieves Steal Property Only Work With B:2.4ghz Wifi Connection,it Connects To Your Smartphone Via App Under B:2.4g Wifi Environment. Lf Your Wifi Router Only Supports 5g, The Device Connect Compatible With For And Assistant,it Can Also Perform Auto Control Together With Other Smart Devices That Are Compatible With For Smart Life User-friendly Operation,simple Controls Include Single-click Activation, Double-click Deactivation,3-seconds For Silence And A 8-seconds For Reset Versatile Protection For Multiple Home Areas,the Sensor Is Very Easy To Use Which Can Be Used In Scenarios According To Your Needs, Such As Family Hotel,rental House,drawer Safe Deposit Box Etc Wireless Type:b:2.4gwi-fi Alarm Volume:130db Standby Current:less Than 10ua Operating Temperature:-10 C