Sonnette de porte électronique intelligente 433 MHz sans fil, auto-alimentée et à longue portée, pour personnes âgées

Frequently Asked Questions: How long does it take to ship after placing an order? Small batch orders outside of holidays are shipped within 48 hours of placing the order. If the quantity is large, please contact customer service to confirm the shipping time. 2. What is self-generation? This is for transmitters, such as doorbell transmitters and switch panels, also known as "self-adhesive panels." They have a built-in micro-power generation module that converts kinetic energy into electrical energy by means of pressing, thereby driving the circuit to emit a wireless signal. This method of power generation is usually called self-generation, and some people also call it kinetic energy generation. 3. What do US standards and European standards mean? How to choose in China? This refers to plugs; different countries use different plugs. The US uses US standards, Europe uses European standards, the UK uses UK standards, and China uses national standards. US standards are also universally compatible. 4. Can you do dropshipping? To facilitate initial inventory stocking for small sellers and reduce the pressure of purchasing goods, we can provide a small amount of drop-shipping services. Later, when the volume increases, we can negotiate the purchase price. 5. What content can be customized? We have a solid supply chain system and can provide customized services such as color, appearance, functionality, solutions, packaging, and branding. Product box dimensions Product Name Product Specifications Single set weight Single set of paper boxes size Carton model Outer box dimensions Outer box model Packing quantity Total weight of the whole box Memo 002 Self-Generating Wireless Doorbell White Beauty 1v1 112g 9*7.5*8cm 0021v1 40*39.5*43cm QX-002 100 11.92 kg 12.12 kg 002 Self-Generating Wireless Doorbell White Beauty 1v2 157g 9*7.5*8cm 0021v1 40*39.5*43cm QX-002 100 16.42 kg 002 Self-Generating Wireless Doorbell White Beauty 2v1 147g 9*7.5*8cm 0021v1 40*39.5*43cm QX-002 100 15.42kg 002 Self-Generating Wireless Doorbell European Standard 1v1 115g 9*7.5*8cm 0021v1 40*39.5*43cm QX-002 100 12.22 kg 002 Self-Generating Wireless Doorbell European standard 1v2 170g 10.5*9*8cm 0011v1 48*44.5*35cm QX-001 80 14.54 kg 002 Self-Generating Wireless Doorbell European standard 2v1 150g 9*7.5*8cm 0021v1 40*39.5*43cm QX-002 100 15.72 kg 002 Self-Generating Wireless Doorbell British Standard 1v1 120g 9*7.5*8cm 0021v1 40*39.5*43cm QX-002 100 12.72 kg 002 Self-Generating Wireless Doorbell British Standard 1v2 173g 9*7.5*8cm 0021v1 40*39.5*43cm QX-002 100 18.02 kg 002 Self-Generating Wireless Doorbell British Standard 2v1 155g 9*7.5*8cm 0021v1 40*39.5*43cm QX-002 100 16.22 kg