国产国拍精品视频免费看,在线免费观看AV,69国产成人综合久久精,国产欧美精品三区,亚洲黄色影院,国产精品美女在线,91久久福利国产成人精品,亚洲va精品中文字幕,日日综合网,亚洲第一综合色

- Operating range up to 100 meters in the open area

- Using high frequency transmit technology and innovative function of same frequency with different code, one dooebell has one code to avoid disturbing from neighborhoods

- 30 melodies

- Blue LED indicator: 3pcs

- Receiver Battery: 3 x AA battery (not included)

- Transmitter Battery: 1x3V CR2032 (included)

- N.W. of Receiver (doorbell): 93.6g

- N.W. of Transmitter (button): 25.8g

- Approval: CE, RoHS

- Radio Frequency: 433.92MHz

- Waterproof of transmitter: IP44