$11.99 (as of 03/07/2018 04:08 PDT details )
Features:
- Easy to add additional receivers to the original doorbell.
- Size 3.1 3.1 1 inches Power lt 0.5W Voltage AC 110V US Made of high quality ABS material
- With over 50 different ring tones and 4 levels of adjustable volume.
- Working distance range 500 1000feet in an open air, no obstacle .
- ULTRA EASY INSTALLATION No batteries required for receiver, simply plug it into a power supply US Standard