Sound: Consider the loudness of the alarm’s siren. You want an alarm that is loud enough to deter would-be intruders and be heard from inside your home. Synonyms afraid afraid frightened ▪ scared ▪ terrified ▪ alarmed ▪ paranoid These words all describe feeling or showing fear. afraid [not before noun] feeling fear; worried that something bad might happen: why you need door sensor alarm】-physen wireless door sensor system includes 2 door sensors and 1 plug-in receiver, you can set different tones for each sensor, that means you can know which door/window opens without going to confirm. when the door/window is open, the sensor will be triggered to send a signal to the receiver, then the receiver will ring up. it can be wi... A: Almost all door alarm sensors on the market right now will use a ‘reed switch’ that is able to determine when a protected area has been breached. A reed switch is made up of a set of electrical connectors that are placed just slightly apart. Once a magnetic field is parallel to their electrical connectors, they are pulled together which closes the circuit and ultimately sounds an alarm. modes: 1. constant alarm (continuously alarm 30s even door closed); 2. sos mode (press sos button on remote the sensor alarming); 3. door open chime (sounds “dingdong” once door opens)

fixing distance less than 0.3 inches & expandable】 - note: the fixing distance of sensor and magnet should be less than 0.3 inches/0.8 cm, the closer the better, try to reset them closer if the receiver doesn't work, this is very important. each door sensor or receiver can be expandable, add more receiver or sensor to setup different chimes in multiple areas for front ... Price: Consider your budget when choosing an alarm for your garage. Prices can range from just a few pounds to hundreds of pounds depending on the features and capabilities alarm modes: it has 4 types of alarm modes: #1 ordinary alarm mode (alarm will last for 1 minute if your door is being open); #2 wireless doorbell mode (“ding dong”, rings once as a welcome tone ); #3 alarm and stop mode (it will alarm loudly if the door is open, and it will stop as soon as your door is closed); #4 door closing reminder mode ("di di", from low to high... Easy volume control: 5 levels adjustable volume. no need worry about the alarm is extremely loud or not loud, easily press +/- button to set the volume as your need. Each door and window alarm offers its own unique benefits. Here are some of the characteristics you might want to look for when you shop for alarms:

sensitive & loud enough】 the door window alarm has the function of real-time detection and is sensitive to subtle changes. once the door or window is opened, the burglar alarm will sound a loud 120db alarm to remind you that someone is entering your home without permission. it can also be used as a doorstop alarm, shed alarm and garage alarm. start your smart lifestyle]- do you want the house lights auto turn on once you come in the front door? just integrate the sensor with your smart lights! create smart scene on smart life app, you light can be automatically light on when you open the door. note: require your smart light can be added to smart life app. stable wireless range & expandable】-the operating wireless range is up to 500 feet in open area, strong enough to cover each door and window in your house. code learning function allows you to add more additional magnetic door sensors and receivers as needed. remote range: this wireless portable door entry alert comes paired with a remote for arming, disarming, and triggering additional functions on your alarm. the remote can work up to 82ft (25 meters) away from the alarm. multiple alarm modes】 there are different alarm modes for optional. normal alarm mode will alert loudly if the door is opened. doorbell mode can be used as a normal doorbell at home or in shops. when someone enters the shop, a ding-dong sound will be heard. sos mode can be used as a calling bell for elderly to ask for help.

easy installation]- very easy to install via the tapes or screws mount on door or window frame. tapes and screws included, everything you need to get started is in the box. note: make sure that the sensor and magnet are aligned and gap less than 10 mm. Location - It’s also important to consider the location in which you’re planning to install your sensor. For example, you’ll likely want different settings and features if you’re placing it on the main entrance to your home opposed to if you’re planning on using it on your child’s room. It’s best to decide where you’ll be placing your sensor before choosing which is best for you. Wireless installation—Most door and window alarms work on a wireless system, connecting to your home system using a cellular or broadband internet connection. This means that you don’t need to place your door and window alarms near outlets.Sensors: Choose an alarm with sensors that are appropriate for your garage. For example, motion sensors will detect movement inside the garage, while door sensors will detect when a door is opened. If you are going to fit an alarm to your garage, there are a number of things you may want to consider before making your choice. multipurpose sensor inside your home]- the door window sensor will be triggered when door or window is opened or closed, you will get an instant alarm notification on your phone within about 2 - 8 seconds depends on wifi networks. (note: only support 2.4ghz. no built-in siren, but the alert message to your phone.) protection with 300ft remote control range】wireless door alarm features wide 300 feet remote control range to cover your house. it can be matched up to 30 accessories at most such as different remote controls, door sensors, pir motion detectors.