Features:

- Come with 4 receivers
-Transmitter activates a loud 85 decibel alarm in the receiver;
-Unique digital signature so you can use multiple devices without interference;
-Discreet and attractive design;
-Range of 25 metres radio frequency works through walls,floors,cushions,etc;
-Card shaped transmitter,fits in purse/wallet/business card holder,take it anywhere you go;
-Smart and portable;
-Easy to use,locate lost items quickly and easily,just in seconds.

Specifications:
1 to 4 set: one transmitter with single receiver
-Transmitter Size: 84x 55x 3.8mm
-Receiver Size: 44x28x10mm
-Use 2 units CR2016,3V batteries for Transmitter(batteries included but no warranty) 
-Use 1 unit CR2032,12V battery for Receiver(battery included no warranty) 

10 working days delivery lead time from Malaysia