Wireless Doorbell Self Generating 58 Melodies Waterproof Door Bell for Home Commercial Use

Feature: 1. Multi Purpose: Not only a doorbell, but also a pager, suitable for babies sleeping alone, elderly and pregnant women in need, free of wiring and long transmission distance. 2. Self Generating: The wireless doorbell is battery free, and when the finger is pressed, the energy is converted into electrical energy and has strong penetration power. 3. 58 Ringtones and 4 Volumes: The wireless doorbell is designed with 58 ringtones and 4 volumes. Set the volume according to the individual to solve the problem of volume. 4. Sound and Light Alarn Function: The receiver receives the signal, sound and light remind, which is convenient for the elderly and patients with ear diseases. 5. Waterproof and Heat Resistant: Cordness doorbell has IP44 sunproof and waterproof, effectively extending the service life, working temperature is ?10 celsius ?+45 celsius . Specification: Item Type: Wireless Doorbell Material: ABS Transmitter Power Source: Self generated Size: Approx. 63x63x20mm/2.48x2.48x0.79in Ambient Temperature: -20 celsius -+60 celsius Transmission Distance: Open space > 150M RF Frequency: 433MHz Receiver Power Supply: AC110-240V 50/60Hz Power Consumption: 0.25W Ringtone: 58 Ringtone Volume: more than 90dB Ambient Temperature: -10 celsius -+45 celsius . Package List: 1 x Doorbell1 x Indoor Unit1 x Sticker1 x Manual