The remote control operating voltage: 12V or less

The remote low power consumption: 10mw or less

Receiving acoustic generator working voltage: 50 hz AC220V / 60 hz

Receiver power consumption: 0.5 W

Adjustable volume range: 25 to 110 db

Working frequency: 315 MHZ, 433 MHZ, 868 MHZ

The remote control battery: 12V23A alkaline batteries

Waterproof button

Package Includes
1 x Push Button (Transmitter)
1 x Plugin Chime (Receiver)

• Wireless doorbell kit, install battery-operated transmitter outside using adhesive mounting tape or screws,maximum effective range 1000 ft (300 m).
• Adjustable volume range: 25 to 110 db, Use as a residential or business doorbell, or home paging device;
• Smart design and simple controls are designed for easy installation and operation;
• Quality design and materials for sturdy, dependable performance;
• Has excellent range between the button and the receiver unit. If any question, please contact us and we will help you.

Wireless doorbell kit, install battery-operated transmitter outside using adhesive mounting tape or screws,maximum effective range 1000 ft (300 m).Aierly