?No Battery Required?Wireless Doorbell Waterproof, AURTEC Door Chime Kit with 1 Plug-In LED Flash Receivers & 1 Press Self-Powered Transmitter, 51

[BATTERY FREE]: Transmitter is converting the energy from finger press, one receivers is easy to get rid of the worry about changing batteries, more conveniently and more environment friendly. [EASY TO INSTALL&USE]: Easily plug receivers into an electrical outlet. The push button can be fixed to the doorframe with the attached adhesive tapes. [STRONG SIGNAL]: 150m/500ft Wireless Range. It's ideal for large spaces which with several entranceways or multiple floors big house, office, hotel service and other areas. [HIGH QUALITY AND DURABLE TRANSMITTER]: IP44 waterproof, none combustible ABS850 materials, 20 years operation life,-4��F~149��F working temperature. [MULTIFUNCTIONAL RECEIVERS]: 51 chimes, 4 volume levels, power plug, flashing LED light indicator will be light up automatically in dark(can��t be shut off)

• 1 x Launcher
• 1 x R��cepteur
• 1 x Ruban adh��sif double face puissant
• 1 x User manuel