Attach the transmitter to an important belonging to prevent it from drifting too far away. The receiver will sound and vibrate if the transmitter wanders out of search range (selectable between 3~5 and 7~12 meters). Two frequencies are selectable to allow two sets of this product to be used concurrently without confusing each other. The receiver uses an AAA battery (not included) and the transmitter uses a CR2032 battery (included).

• Frequency: 315/ 433 MHz
• Search range: 3~5 M/ 7~12 M
• Receiver size: 60x 35x 15 mm
• Transmitter size: 43x 26x 10 mm