Wireless Motion Sensor Doorbell with Night Light, Door Chime for Business Entry,Store Welcome Buzzer,Home Security Alarm, Caregiver Reminder for Elderly (2 Receiver and 1 PIR Detectors)

36 Ringtones Chime 5 in1 Wireless Welcome Doorbell Burglar Alarm with PIR Motion Sensor Remote transmission, 280 meters in the open place, suitable for more places. Independent alarm horn,maximum 113dB, can effectively deter thieves. Can maximum learning 32 wireless sensor accessories and 8 remote controllers. Volume can adjust, have memory function when change the battery, more considerate and more comfortable. Receiver host using AA battery(not included) or micro USB power supply, infrared curtain using AAA battery(not included) or micro USB power supply. Applicable to all kinds of shops, hotels,offices,factories,homes,etc