Campainha sem fio para porta de casa inteligente Veltsome Bell com 36 toques, kit de campainha para porta de casa externa de longa distância de 300 m, sem bateria

Wireless Doorbell Technical Parameters: Receiver working voltage: AC100-240V 50HZ/60HZ Receiver power consumption: 0.5W Working frequency: 433MHz Transmitter Power Consumption: 10mW Spectrum Analyzer Antenna Combined Test, CE Limit Transmitter battery: 12V23A alkaline battery Battery life: estimated to last 20 times per day, approximately 1 year Volume adjustable range: 25-85dB tested at 0.5 meters with a decibel meter Wireless distance: about 280 meters in the open air, about 20-50 meters indoors with obstacles Note: The wireless distance is affected by walls, radios, metals, etc. It is normal to have certain deviations in actual use Packing List: 1 Set of Wireless Doorbells Why Choose Us? 136 ringtones 24-Speed​​Volume 340M Remote Distance 4300M Range in operating space Durable and Long-Lasting 1Stay dryBuilt to LastLong Power 2 Operating Temperature: -4°F/-20C~140F/60C 3Large capacity battery Maximum Lifespan Ur Wireless Doorbell: 984ft30m Wireless Range Othe r Doorbells Only 500-650ft 150-200m Wireless s range 36 Ringtones Switch Freely ding dong Moscow Nights Lake Baikal Mozart Romeo and Juliet ...etc LED Indicator Mute Mode 1 for baby sleeping and nap time 2Flashing colorful LED lights also help hearing-impaired individuals Button Power supply method: 12V23A alkaline battery Transmitter power consumption: 10mW Spectrum analyzer antenna combination test, CE limitBattery life: estimated 20 times per day, about 1-2 yearsWireless distance: about 300 meters in open space, Indoor- about 20-50 meters including obstaclesOperating temperature: -20-60 degrees Celsius Transmission frequency: 433.92MHz Ring the Bell Power supply mode: AC100-240V 50HZ/60HZ Volume adjustment: 8-level volume adjustment Music adjustment: 38 chord music Ole Range: 25-85dB Tested at 0.5 meters with decibel meters Working environment: humidity 80% Working temperature: -10-60 degrees Celsius Receiving frequency: 433.92MHz Feedback and Rewards: Good Fe Thank you for your satisfactory evaluation, which will have a positive effect on promoting our businessIf iu chan leve Thank you for your five-star praise and pictures; we are very glad for this Bad Feedback - If there are any problems with your package, please contact us before leaving comments Still wil offer the best service to solve ani Jesus until iu are satisfied