> Alarm indicator: Red led;

> Sensor: Dual element infrared sensor;

> Digital circuit, using microprocessor;

> Bipolar pulse count adjustable;

> Anti-white light, anti-fluorescent function;

> Full automatic temperature compensation;

> Digital microprocessor controller, anti false alarm;

> SMT manufacturing process, anti RFI, EMI interference;

> ABS plastic material;

> The tamper function