1. Dust and rain proof, and 2. Solar charging for energy conservation and environmental protection 3. With overcharge and discharge protection 4. Wide sensing range, with the human body sensing a distance of 5-8 meters 5. Suitable for places requiring safety alarms such as gardens, orchards, construction sites, farms, warehouses, etc Product name: Infrared alarm detector(Built in lithium battery 3.7V400MAH) Led: 6 flashing red leds Charging method: Solar charging/dc charging Charging time: 6-8 hours (solar charging), dc charging Less than 1 hour (dc5v/1a) Alarm sound: 129 decibels Battery: 3.7v/400ma (with overcharge and overcharge protection) Detection distance: 5-8 meters Detection angle: 125 Sensing function: 1st gear 24-hour sensing sound and light alarm mode, 2nd gear nighttime sensing sound and light alarm mode, 3rd gear nighttime cycling 5-minute sound and light alarm Timing function: cycle for 5 minutes at night, sound and light alarm, second gear cycle for 10 minutes, and third gear cycle for 20 minutes Color: Red Material: ABS Package Contents: 1 x Infrared alarm detector Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.