3m - 7m Kids Safety Personal Alarm Keychain Devices with 256 Code

·  Popular Style Anti-lost Personal Alarm

·  High Quality

·  1 Receiver & 3 Transmitters to protect child from being lost and bag from being stolen

Specifications:

·  Size: RX: 68 x 47 x 16mm & TX: 42 x 30 x 12mm

·  Power requirement: RX: AAA x 1 piece TX: CR2032 x1 piece 

·  Work mode: alarm/alarm + vibration/vibration for selection

·  Work condition: anti-lost alarm & searching alarm 

·  Effective distance: 3 to 7m

·  Frequency: 315 or 433MHz

·  Batterylife: continue to use 8 hours a day, about 7 to 10 days

·  Code: 256 code (If there are too many codes, it will become astaticism.)