Kabellose Türklingel mit 300 m Reichweite, Smart-Home-Türklingel-Set mit 36 ​​Klingeltönen, LED-Blitzlicht, US-/EU-Stecker

-Explain The Use And Precautions A series wireless doorbell is a smart doorbell that is different from traditional wireless doorbells. The transmission and reception can be freely learned and operated in pairing, and it is easy to use without electromagnetic interference. Product features: Stylish design, simple and convenient installation, simple design, a variety of music, optional 5-speed volume Remote remote control receiving distance, straight line distance of 300 meters (workshop laboratory test data), transmitter and receiver can be freely matched. Music settings: In the selected music, press and hold the volume button for 4 seconds, the music indicator light is on, and the learning state is entered. At this time, press the transmitter button to receive a flashing light and a ringtone, indicating that the pairing is successful. Freely match transmitter and receiver settings: Press and hold the volume for 4 seconds, the music indicator light is on, and the learning state is entered. At this time, press the transmitter button to receive the flashing light and ringtone, indicating the configuration. Yes success -Precautions 1. Non-professionals should not open it without authorization and repair it by themselves to avoid damaging precision electronic components. 2. There is a high-voltage circuit inside, please do not open it for use. 3. The correct use of wooden products can effectively extend the service life. 4. The actual use of the remote control distance is shortened depending on the interference of environmental factors. 5. Please replace the battery if the use distance is significantly shortened or the sound is false. 6. Please do not install it on metal objects (such as iron doors, stainless steel doors, etc.) for installation. -Product Parameters Receiver parameters: Voltage range: AC90-250V power consumption: ≤0.5W Receiving sensitivity: -110dbm operating frequency: 433.92MHz Transmitter parameters: Power consumption: ≤0.01mW Transmitter uses a 12V23A alkaline battery operating frequency: 433.92MHz Note: There is no effect of natural separation from the body, no electricity, metal, etc., and the actual use has a certain angle difference, which is the normal limit point. Feedback and Rewards: Good Feedback - Your satisfactory evaluation will have a positive effect on promoting our business.If you can leave a five-star praise and pictures, we will so glad for this. Bad Feedback - If there have any problem with your package,please contact us before you leave comments ,we will offer best service to solve your any problem Until you are satisfied.