Features 1、SENSITIVE SENSING: Accurate radar detection technology detects distance to the centimeter, immediately playing voice when someone or something passes through the set sensing area. 2、SMART OPERATIONS: This voice prompter is simple in appearance, easy and convenient to operate, you can adjust the volume, set the timing, and other functions through the for WeChat applet. 3、LONG WORKING TIME: Built in 1000MAH battery, low power consumption design, long working time, multiple mode options, suitable for scenes with precise sensing distance and angle requirements. 4、MULTI FUNCTIONAL: Infrared and radar detection induction technology, strong anti interference and stable performance. 2W speaker with loud and full sound. Supports voice recording and sensing distance learning setting function. 5、VERSATILE APPLICATION: Different modes available for various places. Suitable for locations such as parking lot entrances, restroom stalls, warehouse height limits, elevator overload areas. Specifications Item Type: Portable Store Voice Prompt Battery: Built in 1000mAh battery Alarm Method: On Site Alarm Material: ABS Product Size: Approx. 115x70x27mm/4.52x2.75x1.06in Sound Format: MP3 Bitrate: 16-320Kbps Sound Output Power: 8Ω 2W (Typical) Output Sound Pressure: ≥100dB Radar Effective Distance: 30-350±20cm Infrared Body Induction Distance: ≥4m Operating Temperature: -20 to 40°C Playback Duration: About 3 hours when fully charged Weight: Approx. 245.00g / 8.64oz Package List 1 x Main Unit 2 x Cables 3 x Screws 2 x Nuts 2 x Plastic Expansion Tubes 4 x Accessories 1 x User Manual