150m long Working Range Best Ring Wireless Doorbell In Battery IP44 Waterproof

• Up to 500ft/150m operating range in open space
• 52 melodies with 3 levels of adjustable volume
• Touch button control doorbell with high sensitivity
• Battery powered with no wiring and no electrician needed
• Self-learning code system can match maximum 6 devices
• Waterproof function stop dust and spray water