1. Power-saving mode: the use of different signal processing methods to achieve power-saving mode, the ordinary single-technology detectors, high-energy batteries can be 12-36 months.

 2. Self-test function: 4 hours, 8 times, if not send the signal to the host, it will send the probe fault information is lost

 3. Probe code re-use study and timely code in two ways, the code is simple and reliable.