Cordless Calling Bell-1000ft Range with 32 Chime. No battery is required for this wireless doorbell. The push button generates electricity by itself. No more worrying about battery replacement. Just plug the receiver into the wall socket and use them easily.
The working temperature is from -20° to 60°（-4°F to 140°F). Multiple Ringtones and LED light make it sutable for home office store school hospital and other spaces. Self powered calling bell operating range is 300m / 1000ft in open areas. You can install it in any corner in your space.
