US Standard and European Standard Household Self-generated Wireless Doorbell Waterproof, Battery-free, Wiring-free One-to-two Electronic AC Doorbell

Product information: Power mode: self-generated Power consumption: 0.25 Product Specifications: European, American Power supply voltage: 110~ 230 Scope of application: home, villa, company, etc Ringtones: 38 Type: Wireless Doorbell Package: 1 * Doorbell