1、Intelligent operation, this voice prompt is infrared human body sensor, you can control this machine through WeChat applet to upload the voice you want which makes operation and voice replacement faster and more efficient, eliminating the trouble of replacement. 2、You can set the timing to play different voices at different times, eliminating the need for complicated disassembly work, and making the intelligent voice prompt system convenient to your life. 3、Sound control, high decibel, high volume, fast and remote adjustment, so that the notice can be effectively communicated. 4、Safety voice prompts help safe production, allowing people to comply with safety codes of conduct in real time. 5、Has multiple trigger mode options, "infrared human body induction trigger", "relay output control" and "external input trigger" 6、Music customization, voice prompts can be customized to meet your voice and music playback requirements for various scenarios. 7、Supports Bluetooth to change music, allowing you to customize the exclusive scene as you like.. 8、Wide range of application. It can be installed at the entrance of a construction site to remind workers, can be installed in railway stations to remind passengers, can be installed in subway stations to remind passengers to wait in line, can be installed in supermarkets and used for supermarket promotions and safety instructions, can be installed in playgrounds, can remind visitors of precautions and wearing instructions. Conditon: 100% Brand New Item Type: Voice Prompter Material: ABS Plastic Color: As Pictures Shown Host Size: Approx. 27 x 20 x 9cm/10.6 x 7.9 x 3.5in Working Current: Sleep State: ≤880μA Playback Status: ≤500mA Standby State: ≤18.4mAAudio Format: MP3, Bit Rate: 8-320Kbps Audio Output Power: 8Ω/10W (Typical Value) Sensing Range: ≥Approx. 4m/13.1ft Alarm Sound: ≥100dB Bluetooth Effective Distance: ≤Approx. 10m/32.8ft (Barrier-Free)Basic Function: Button Name Operation Mode Realization Function Status A Button Short Press Volume 6 level loop adjustment None A Button Press the button for 3s start recording with a "di" sound, The red light flashes once Use the phone player for voice recording, Press the short A button again to exit the recording B Button Short Press Next song (can be looped) None B Button Insert the U disk and press and hold for 3s U disk voice copy The red indicator light flashes 1 x Voice Prompter Host (DC12V/2A) 1 x Basic Operating Instructions 1 x Power Plug