• 38 ringtones to choose from and 3-step volume control (0~85dB)

• Eye-catching backlight flashes when someone pushes the doorbell. Particularly suitable for the elderly, deaf, and preg1nant women

• If paired with multiple push units in one system, the chime can be set individually for each push unit

• Uses machine-learning to prevent interference from other wireless transmitters

• Automatically saves selected ringtone after powering off

• Working frequency: 433 MHz

• Receiving distance: 300M(in open area)

• Transmitter size: 75 x 51 x 20 mm Receiver size: 95 x 65 x 24 mm

• Receivers Rated voltage :AC 110V-220V -240V

• The transmitter 12V 23A battery (battery not included)

1. The button cannot be placed on an iron door because it will interfere with the signal.

2. Works during heavy rainfall. However, we recommend buying a waterproof cover for long term use.

1 x Wireless 433MHz Doorbell