1. Working principle:
When someone presses the doorbell button, the integrated energy harvesting device (such as piezoelectric ceramics or electromagnetic induction principle) activates, converting the kinetic energy of the press into electricity.
• This amount of power is enough to send a wireless signal to an indoor receiver.
• Signals via 433Mhz wireless transmission technology are sent to a matching indoor receiving unit.
2. Product features:
• Self-electric power supply: no need to replace the battery, reducing maintenance costs and environmental pollution.
• Remote transmission: The ability to achieve long-distance signal transmission, ensuring that no matter which corner of the home can clearly hear the doorbell sound.
• Change the ringtone: the built-in 36 ringtones can be freely switched.
Logistics information
Our products are located in Hong Kong, China, and the logistics speed depends on your specific location. According to our experience, it usually takes about 15-20 days of transportation time
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RETURNS POLICY
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SHIPPING
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How to choose the correct size:
Step 1 Please measure your foot length carefully.
Step 2 Please choose the correct size according to your foot length and chinese size.
For example, If your foot length is 255 mm , you should choose the size 8.
