Features:* The motion sensor alarm kit is a device that detects physical motion on a device or within an environment in real time, including a transmitter and a receiver. If transmitter detected any movement the receiver makes an audible and visual alert. Great for home, apartment, business, store, office, garage, mailbox, etc. Reminder for people movement or car movement.* DIY Programmable: Can add more motion sensors and receivers to detect motions in different area. The transmitter is waterproof. * 5 level adjustable volume: the motion alarm receiver with 5 levels of adjustable volume from 0dB to 97dB is available. You can easily adjust the suitable volume as your need. And it have 48 ringtones.* LED Night Light: The plug-in receiver also can be a LED night light, there are 7 adjustable brightness(included off mode) to choose from. It will light up automatically in dark environments after you set this function, never afraid of the