This advanced wireless doorbell boasts a magnificent operating range of up to 100 meters in open air. It comes with a waterproof transmitter that can be easily installed either outdoors or indoors. The receiver unit has an LED indicator designed for those with profound hearing loss. 32 sounds are available for selection. 

• Transmitter power supply: battery (12V, 32A).
• Receiver power supply: 3 x AA battery (1.5V).