Description:This set ofmagnetic detecting switch monitors the opening and closure of doors and windowsused to protect doors and windows for the most part. It is great for installedon doors of house, garage, warehouse, enterprise and shop etc.Features:This is a setof magnetic detecting switch used to protect doors and windows for the mostpart.High qualitymagnetic sensor contacts with strong magnetic, sensitive respond and longdurability.Integrates homesecurity function, SOS, door bell in one body operated by remote controller formulti-functional and convenient use.When the alarmis triggered, it will give off 105dB high decibel sound to notice you.One remotecontroller can connect to 50 magnetic sensors while one magnetic sensor can becontrolled by 8 remote controllers.The armed ordisarmed status will be set by the remote controller for maximum safety.With backadhesive, it is easy to install. Please make the magnetic sensor and bar alignmentwith the help of marker, and it should be installed tightly. You can testwhether it is OK after installation.RemoteController Buttons Indication:Armed Key: Press it whenleaving home for armed statusDisarmed Key: Press it whencoming back for disarmed statusSOS: Press it inemergency to call for helpCall Key: Remind familiesto open the door or help to look after the olderSpecifications:Condition: 100%Brand NewMaterial: ABSColor: WhiteAlarm Sound Decibel:105DBAlarm Time: Alarming30S after the door opened(if it's still in armed status, the alarm will ring30S though the door was closed)Magnetic SensorBattery: 2 * AAA Batteries(not included)Remote ControlBattery: 12V 17A Battery(not included)Remote ControlDistance: 150m in the open area, 20m in the area with barriersMagnetic SensorSize: Approx. 8.5*4.3*1.6cm/3.35*1.69*0.63inWeight: Approx.72gPackageIncluded:1 * MagneticSensor1 * MagneticBar1 * RemoteControllerNote:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering..