CF Card Monitoring Alarm with Automatic Battery Saver Function wholesale china

CF card unit is just like the regular compact flash card
When the CF card transmitter goes over the preset range, the master unit will emit a warning tone immediately
Acts as a burglar alarm and a reminder
Can be put inside CF card slot without other's awareness
Offers safety, security, and peace of mind
Automatic battery saver function
Auto power on and auto sleep functions
Adjustable range setting from 0.5 to 6 meters
An active wireless alarm
Patented in the USA, Taiwan, Japan, mainland China, and more
Size:
Pen type master unit: 4.9 x 1.1 x 0.7 inches
Sub unit: just like the real CF card (1.68 x 1.49 x 0.14 inches)
Weight: about 55g
Power:
Master unit: 1.5V DC (AAA/UM-4 battery x 1)
Sub unit: CR2025 lithium battery