High quality chip, guarantee quality without false alarm <br> <br> Large detection range, 0~8 meters large detection range <br> <br> High-fidelity speakers, built-in 38 music, low consumption <br> <br> 150 meters distance, wireless reception, host position removable <br> <br> Multiple uses to meet different needs <br> <br> Can be used in hotels, hotels, shops, offices, homes, etc. <br> <br> <br> <br> Receiver operating voltage: 110-240V <br> <br> Transmitter operating voltage: 4.5V (3 batteries, 7 batteries) <br> <br> Receiver button: <br> <br> 1) Music: 38 music options, side music logo buttons to adjust <br> <br> 2) Volume: three-speed volume adjustment (high, medium, low) side volume indicator button to adjust <br> <br> 3) Can be set with sound and no sound (with sound: sound + indicator silent: indicator light) <br> <br> Working distance: up to 70 meters <br> <br> Transmitter sensing distance: 3-7 meters <br> <br> Receiver size: 76*80*33mm <br> <br> Transmitter size: 80*59*45mm <br> <br> Specifications: <br> <br> Product operation instructions: <br> <br> 1. Plug the receiver into the socket and turn on the detector battery cover to insert the battery. <br> <br> 2, the rotating bracket is stuck in the back of the detector <br> <br> 3. The detector switch is pushed to the ON position and waits for the self-test time of 10 seconds to enter the normal working state. <br> <br> Package Included: <br> <br> 1* receiver <br> <br> 1* transmitter <br> <br> 1* instruction manual <br> <br> Notes: <br> <br> Due to the difference between different monitors, the pictures may not reflect the actual color of the item. <br> <br> Compare the detail sizes with yours, please allow 1-3cm error, due to manual measurement. <br> <br> Please leaving a message before you give the bad feedback, if the products have some problems. <br> <br> Thanks for your understandings.