Wireless Remote Lost Key Finder Alarm with Keychains

Model: CTD-KF3

Stick the remote controller on the wall or on the desk, and the receiver with keys or the article you always can't find, when you can't find them, just push the corresponding button on the remote controller, and the receiver will sound alarm right away.(it can find the lost thing in a 400 square meter house)
The alarm will last for 4 seconds then stopped.

Specifications:
Frequency: 433.92MHZ
Distance: 35-60 meters
Sound: 75DB
Remote controller: 12X4.3X1.8CM
WT: 41.5g (battery included)
Battery: 27A 1pc 12v
Receiver: 4.5X2.8X1.1CM
WT: 13.5g  (battery included)
Battery: CR2032 1pc 3V
Color box package