Mengshen Motion Detector Alarm, Wireless Doorbell for Front Door/Visitor Doorbell for Home and Shop/Mailbox

• Wireless motion sensor: remote transmission, 280-meter range, suitable for more locations. • Home security alarm: an independent alarm, maximum 113dB, can scare away thieves and intruders. • Power supply: the receiver uses one AA battery (not included) or USB 2.0 micro-B (not included), the motion sensor uses one AAA battery (not included) or USB 2.0 micro-B (not included). • 5 mode options: Welcome mode / bell mode / alarm mode / color light mode / night light mode, meeting your needs. • Wide application: not only perfect for home security, but also for shops, hotels, offices, and factories.