electronic 4 in 1 alarm Wireless Remote TRACKER Key Finder lost things locator 4 receiver anti lost sensor alarm phone finder

Frequency: 433.92MHZ

Sound: 75DB

Transmitter: 8X5.2X0.56CM

WT: 21g (battery included)

Battery: Lithium CR2016*2

Receiver: 4.5X2.8X1.1CM

WT: 13.5g, battery included?

Battery: CR2032X1 (NOT INCLUED)

Put the card in the wallet, on the desk or stick it on the fridge. and the receiver with keys, when you can't find the keys, just push a button on the card, and the receiver will sound alarm within 1 second.

The alarm will last for 5 seconds then stopped.

Working distance: 25 meters.