1、Human Body Sensing Technology: The voice prompter adopts mature pyroelectric human body sensing technology, and it can accurately identify the person passing by and play the sound. 2、Easy to Install: The voice prompter can play different voice content locations and time periods according to different voice content, which is easy to install and operate. 3、Play Modes: The voice prompter supports external trigger control, regular play and interval regular play and 1 to 50 groups of timing data can be set. 4、Wi Fi Connection: This voice prompter supports Wi Fi connection and uses mobile APP to set timing, and the power consumption for playing voice is below 4.5w. 5、Widely Applicable: This voice prompter is widely used in government, exhibition halls, supermarkets, stations, airports and other places. Item Type: Voice Prompter Material: Aluminium alloy Gross Weight: 346g/12.2oz Product Size: 10.5x10.5x3.3cm/4.1x4.1x1.3in Material: Aluminum alloy Power Consumption for Playing Voice: ≤ 4.5w Standby Current: ≤ 100mA FLASH Capacity: Standard 32Mbit FLASH Human Body Sensing Distance: ≤ 4m Playing Sound: ≤ 100dB Purpose: Timed voice reminder for clock in and time division of enterprise subway station attendance machine 1 x Voice Prompter 1 x  Power Cord 1 x Manual 1 Row x 4 Plastic Sleeves 4 x Flat Head Screws 4 x Turnbuckles 4 x Iron Sheets 4 x Self Tapping Screws 1 x Terminals