• No Battery Required: The transmitter has a built-in kinetic energy generation module, which does not need batteries or wiring. It is beautiful and easy to place
• Strong Signal: Long distance transmission up to 150 meters in the open space, strong penetration of signals such as external walls, wooden doors, steel doors and internal walls
• Waterproof: IP44 waterproof, not afraid of wind and rain. Rainy days can also be used, sowed and durable
• Wide Signal Stability Coverage: Long distance transmission has strong permeability and wide signal stability coverage
• 38 ringtones playback: 38 polyphonic ringtones can be switched freely

Specifications:

• Product type: wireless doorbell
• Power supply mode: AC
• Power supply voltage: 100~220 (V)
• Scope of application: 150m
• Ringtones: 38 polyphonic high fidelity music