Hendun Bundle of Wireless Door Alarm with Remote,3 Pack, 3 Main Units & 3 Remotes,Protect Kids Safety
Easy to install and operate - pool/gate/door alarm with remote
Magnetically triggered alarm suitable for Doors or Windows
More alarms and remotes available for pairing
Multi-purpose - magnetic contact door alarms/doorbell chime/door alarm for pool/fridge door alarm/prying door alarm
Detering thieves effectively by 105dB loud alarm

Mengshen Motion Sensor Alarm, Wireless Doorbell Alert for Front Door/Door Entry/Driveway/Mailbox, Home Security System Kit with 1 Sensor and 1 Receiver - YBQ04
Wireless Motion Sensor: Remote transmission, 280 meters in the open place, suitable for more places,
Home Security Alarm: Independent alarm horn,maximum 113dB, can effectively scare the thieves and intruders away,
Power Supply: The Receiver uses AA battery(not included) or USB 2.0 micro-B(not included), motion sensor uses AAA battery(not included) or USB 2.0 micro-B(not included)
5 Model Options: Welcome mode/ doorbell mode/ alarm mode/ color light mode/ night light mode, sufficiently meet your demand,
Widely Application: Not only perfect for home security, but also for shops, hotels, offices and factories.