1. Barometric pressure & altitude sensing for outdoor sports and aerial photography, providing precise auxiliary data. 2. Instant alert for door/window opening, remote push for theft alarm, suitable for home and commercial use. 3. Real-time environmental monitoring, fast response for device linkage, a smart life assistant. 4. High-precision smart sensing, sensitive trigger for automatic control, energy-saving and stable output. 5. Simple current sensing switch for motor and water pump operation monitoring, overload protection assistance., Manufacturer: SamLng