Motion Detector and Wireless Doorbell, Home Alarm System Kit Including 1 Sensor and 1 Receiver, Electronic Sensor Welcome Device for Shops, Offices and Door

Electrical Instructions Receiver host using 3 5 (AA) alkaline batteries or Micro USB power supply. Infrared curtains using 3 7 (AAA) alkaline batteries or Micro USB power supply. Other receiver host battery can use 5-7 months (ring 30 times a day). Other infrared curtain batteries can use 5-7 months (detect 30 times a day). Contents: 1 transmitter1 receiver1 receiver base1 transmitter base1 adhesive paper1 bag of mounting screws1 user manual