Kinetic Bell No Battery Outdoor Waterproof 4 Level Adjustable High Volume Wireless Doorbell Long-distance Calling Device

About kinetic wireless doorbell1. The transmitter is powered by pressing and does not require batteries for life, making it green and environmentally friendly2.90 decibels high volume, four level volume adjustment, can be set to mute3. Acrylic decoration highlights grade and elegance4. The transmitter is not afraid of water and can be installed outdoors or in a washing room5.38 ringtones to choose from, pleasant and melodious, with high notes not broken6. Long distance signal transmission can pass through walls (approximately 30 meters indoors and 150 meters in open spaces)7. Wide voltage design AC 85v-250v 50/60hz can work, globally applicable8. There are three exterior colors: white, black9. Multiple plug specifications are available, including American, European, and British standardsPlease note:1. Our product needs to be used with a receiver, unless you have previously purchased our product and need to purchase additional accessories, otherwise purchasing a transmitter or receiver separately will not work.2. Our product uses RF433 communication, but it cannot be mixed with other RF433 products because in addition to frequency, it also needs to meet the requirements of decoding and coding speed.3. Wireless control does not require a power supply and can be used outdoors or in humid environments. Pressing to generate electricity does not pose a risk of electric shock4. Cut off all power before installing the receiver.5. Cannot be installed inside a metal box as metal will shield signals and cannot be used.Technical parameters1.operating voltage: receiver AC 100-240V,transmitter Kinetic power generation2.Power consumption:0.25W3.Wireless frequency: 433 MHz4.0perating temperature:-10°C~+45°C5.Ringtone volume:>50dB/1m6.Wireless distance: 150 meters (open space)7.Receiver size:855228mm8.Transmitter size:764218mmFAQ:Do I need to pair the product after receiving it?If you purchase a complete set of products, they will be matched correctly at the factory. You only need to connect the receiver to the power and it can be used.Is it possible to add accessories later after purchasing the product?If the purchased products are all of our kind, they can be equipped with accessories at any time, just pair them after receiving the goods.Why can't your product be mixed with products of the same frequency on the market?This is indeed difficult to mix for several reasons. Firstly, other people's products may be encrypted and not allowed to be mixed with products from other manufacturers; Secondly, although they are all products with the same frequency, other factors need to be considered, such as decoding and the speed of sending data packets.