Door Chime, Wireless Door Open Contact Sensor Alarm with 500 FT Range for Business/Store/Home/Office When Entering, 1 Transmitter + 1 Plug-in Receiver

😀【Easy to Install】The sensor and receiver are paired already, all you need to do is attach the transmitter, plug the receiver into any standard outlet, pick a tone you like and here we go., ✔️【A Must-Have】500FT reliable long working range, perfect entry alert chime when door opens for home and business., 🎵【Mute to 120dB】 58 unique long and short tones with 5 adjustable volume levels. The max volume 120dB is loud enough to be heard anywhere in the house, you will never miss out an alert., 🌟【 Door Alarms for Home Security 】If you have kids,pets,or dementia elderly who like to go out of your home,you can use this door sensor alarm to keep your family safe., 🧩【Noiseless Vibration Alert Mode】At night,you can choose Mode,set the volume to mute,so that when someone opens your door or window,you can receive a vibration alert without waking up other family's sleep.