KERUI Home Security System Indoor Outdoor Weather-Proof Siren Window Door Sensors Motion Sensor Alarm with Remote Control more DIY, Wireless Home Hotel Garage Shop Burglar Door Alarm System Door alarm uses remote control to set security code for arming/disarming;home security system complete with fully programmable main unit and sensors,later if you want to DIY,please restore factory first as manual,then add them again or search operation video on youtubeKERUI Standalone Alarm System Operation Guidefor reference. DIY expandable home burglar security alarm system-this alarm horn support up to 30 pcs wireless detectors,8 remote keyfobs,4 doorbell buttons,loud up to 110db deluxe door alarm system for peace of mind. Complete DIY wireless house burglar alarm system kits includes a horn and two window/door sensors,two remote controls,a pir motion detector, loud alarming to protect well for apartment shed hotel garage safety,affordable home security. Loud SOS alarm and easy to get help-children and seniors at home in emergency,press the SOS button of the remote controller,which will trigger the siren alarm up to 110db to notice neighbors or other families in home so that they will get help in time. After sale service- Kindly refer the user manual before usage,if you have any issues or need to customize alarm system kit,please feel free to contact us in our shop,we will try our best to help you out soon;the alarm system kit can compatible with KERUI brand another type alarm hub,DIY complete alarm system as your need. <span class="a-text-bold">Technical parameters:</span><br> 1: size: L * W * H 12mm * 10.2mm * 11mm<br> 2: Power: AC 110V ~220V,the length of the power cable is about 92cm/3ft,can be extended by yourself.<br> 3: the wireless operating frequency: 433MHz<br> 4: the use of the environment stability: -15 ~55,relative humidity: 40% -70% The normal workable distance from the sensors to the horn (host) is about 328 feet (100 meters)in open area,barriers will lessen this distance.And if you are closer to siren/control unit,it loud up to 110db,the longer the distance,the decibel will be reduced,hope you can understand. The burglar alarm system comes with fully programmed,do not have to program anything,after you get it,open each sensor(excluded remote control ) and pull out the little paper tab near the battery so it then powers up the unit,install the PIR sensor and door/windor sensor in somewhere need to protect,the siren horn is powered by a 110 V to 220 V AC adapter,plug it in outlet,will hear beep,then use the remote key fob to arm or disarm the system along with the alarm horn will beep to remind you it in working(arm/disarm) status;in arm status,when doors open even a little or motion sensor detect objects, horn screams up to 110db scare off intruders and alert you or your neighborhood of a possible break in. <span class="a-text-bold"><span class="a-text-italic">Note:</span></span><br> 1,If there are false alarms,please restore to factory setting first,then follow the operation guide to re-setup them by yourself;or you can change new batteries of sensors.<br> 2,The loud siren host alarm without flashing,also the alarm time and volume can&#039;t be adjusted,when the sensor is triggered,the siren will alarm at once,if no one disarms the siren,it will keep alarming about 2 minutes and stop automatically,then it&#039;s will be in disarm status till you arm it.<br> 3,If you want a more louder alarm system,you can add more and more black horns work with same set wireless sensors, you also can choose another type live sound host or smart app control host of KERUI brand together work with same sensors. The black siren host H01 support up to 30 wireless sensors, 8 remote controls and 4 wireless doorbell buttons. Same set sensors can work with more another type live sound alarm hosts ;or live sound standalone alarm system can compatible with smart app control alarm host consist of smart alarm system,the wifi smart plug can control the host&#039;s power adapter or other electronic equipment from anywhere via wifi or data;720P wifi camera, two-way audio and real monitor 24/7 from anywhere,anytime via wifi or data;diy alarm system as your need. Powered by 1PCS 9V 6F22 battery(included),two screws fixed the PIR to the wall,recommend install 2 meter height,the normal motion sensor can detect 19 to 26 feet, a vertical angle of 60 degrees and a horizontal angle of 110 degrees,you can adjust it to avoid false alarms. It without waterproof function,suitable for indoor,the battery normally can last 3~4 months,the battery life is also related to the number of times you use it. When motion sensor no red light or can&#039;t trigger the host,please change new battery. Powered by 23A 12V battery(included),sticky pads fixed the two door/window sensors,when the sensor window is open more than 1mm (0.03 inch), the detector will send signal to alarm host that will sound at immediately. Please note the low voltage indicator on the sensorthe second indicateor lightthat mean need to change new battery. The remotes have sliding covers over the buttons to prevent accidental activation,without waterproof function,powered by 23A 12V battery(included).Each remote has 4 buttons. Activate / deactivate, panic, change use to a door chime. When the work distance is lessen mean the battery is run out need to change new one.