Long Range up to 500 feet / 150meter - Either you are occupied in the garden or at the kitchen, it can remind you that someone is calling from outside. CE, FCC, RoHS certified.
36 Different Chimes - There are 36 different ring tones with 3 levels of adjustable ringing volume(High / Medium / Low) from 25-110dB.
3 Chime Modes - You can press the Sound-and-Flash Button for three options (Sound/LED Flash/Sound and LED Flash). Also, the LED Flash is available when disturbances are to be avoided
Expandable - You can expand each receiver with up to 60 additional push buttons or multiple receivers for one button. And each receiver can be configured with different tones, therewith to tell different visitors from different positions.
Easy Installation - No batteries required for main receiver, just plug the receiver into an electrical outlet. Push button can be fixed to the doorframe with the attached adhesive tapes. The push button is rated IP44 and weatherproof for outdoor use.