Frequency: 136--280MHz
Power: 6W
Range: 1000 M (open )

Car Alarm System .

The device which have a battery in it are put inside the car,It will emit a sige to the pager you carry when some one open the car door or inter to the car
The inductor is put in the center of the car ,there are battery ( 8.4 V 1200 mA charger able) in it, the soft antenna will pull up for emit lomger distance.
there are switch on the device, when you tune on, there are a sound come out ,when you tune again to righ,the induct distance will larger,cover the whole car.
when some one open the car and come into the car, the device will induct and sound ,as well as emit out a sige to the pager you carry with.
when low battery happen, you can charge it on car charger jack.
every thing will be improved accound to you mind when you order.
Frequency: 136--280MHz
Power: 6W
Range: 1000 M (open )
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There are three key inthe Pager.
1)Function Key
2)Select Key
3)Read Key
When power on,you can push Function Key ( can re-push ),then push Select Key to set what you want.
1-ALERT SET:
TONE 1
MOTOr
MUTE
2-Remove Set
CLFAR ALL
DELETE one
3- OFF Power
4-EDIT ALRTM
5-SET TONE
AUDIO 1
6-EDIT TIME
7-EDIT DATE
8-1 READ PAGES