1. High sensitivity.
2. Sound and light alarm, when turn it on or off.
3. Sound and light alarm, when it is low power.
4. Self-checking: when turn on the detector, it will self-check to make sure it is in the
5. Low consumption, one new battery can sustain working for about 40 hours.
6. With Recharge jack, can be recharged.
7. A strong ability to anti-inference.
Power supply: 9V double alkaline batteries
Alarm: Sound & Light