1-to-1 Battery-free Self Powered RF433 Wireless Doorbell EU Plug 38 Ringtones Outdoor IP44 Waterproof 150m Range Long Di

Specifications Operating voltage receiver AC 100 240V transmitter Kinetics power generationPower consumption 0 25WWireless frequency 433 MHzOperating temperature 10°C 45°CRingtone volume 50dB 1mWireless distance 150 meters open area Receiver size 66x50x60mmTransmitter size 70x46x20mmFeatures 1 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 Simple appearance mini and compact round and cute4 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 area 7 Wide voltage design AC 85v 250v 50 60Hz can work globally applicablePackage Includes 1x Transmitter1x Receiver1x Sticker1x Manual1x Package BoxNote 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 Due to the significant shielding effect of metal on wireless signals please do not at