Specifications:

• working frequency: 433MHZ
• Waterproof: yes
• Use of premises: Home office villa hospital school factory
• Type: Doorbells
• Ring tone: More than 15 ring tones
• Receiving distance: 150M Remote (in open area)
• Power Source: Battery
• Origin: CN(Origin)
• Feature: Photograph
• Doorbell Type: Wireless
• Display: None
• Certification: none
• Battery mode: CR2032(not include battery)