SECRUI Wireless Doorbell Easy installation Waterproof Adjustable Volume

SECRUI Doorbell M520+F55 Waterproof Wireless Doorbell Operating at 1000 Foot Range 5 Volume Levels 3 Year Battery Life Pleasant Chimes

• BlackLoud Enough for Anywhere- Adjustable volume and mute mode: 0 to 120 dB. Whether upstairs or basementLong Wireless Range
• Ultra-long wireless 1000 feet range with waterproof LED buttonEasy Installation & Support Expandable
• Already paired before factory and different transmitters can be set to different tunesMultiple Use for Home Office Garage, etcYou will be

This high-frequency electronic technology wireless remote control doorbell adopts the FM signal scheme which has strong anti-interference features and one-to-one signal pairing.