- 【BATTERY FREE】: Transmitter is converting the energy from finger press, two receivers are 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. Never miss a visit or delivery.
- 【HIGH QUALITY AND DURABLE TRANSMITTER】: IP44 waterproof, none combustible ABS850 materials, 20 years operation life, -4℉~149℉ 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）.
