Small portable RF Environmental No-radiation key finder 4 buttons find 4 things   

Feature:

 Small size, easy to carry

 Find your key or any other items easily

 Locate keys up to 40 meters (120 feet) away, through floors, walls, even sofa cushions

 Powered by 27A batteries (Not included)

 With 4 buttons to find 4 different things

 RF wireless technology

 Environmental

 Stable function

 No-radiation

Operation:

- Match:

Use a pen or needle to turn on the first keychain, it will beep constantly ("dee?ee?ee?). Push the button ?? LED on, and the keychain will stop beeping after matching. Turn on the second keychain, and push button B, keychain will stop beeping after matching. Do the same for the other keychains and buttons. Wear the 4 keychains on the things that you want to find.

- Find:

When you want to find the lost keys, just push the button press here on the keychain, and the keychain will sound alarm within 1 second, alarm will last for 4 seconds and then stop.

Finding Distance: 30-40M(Outdoor)/15-25M(Indoor)

Frequency: 433.92MHZ

Transmitter Power Supply: 1 x 23A battery(Included)

Receiver Power Supply: 1 x CR2032 (Included)

Transmitter Size: 120 x 43 x 15 mm

Receiver Size: 50 x 25 x 10 mm

Material: Plastic + Metal

Transmitter Color: Black

Receivers Color: Yellow + Blue + Pink + Black

Package Dimensions(L x W x T): 142 x 200 x 10mm

Product Weight(Receiver and Transmitter): 101g

Package Weight: 130g