SMATRUL K33WW Self-powered Wireless DoorBell Waterproof Smart Home Door Bell (1 Transmitter + 1 Receiver) - EU Plug

• 51 ringtones to choose from and 4-step volume control (0~110dB), loud enough to be heard anywhere in your home

• 150 meter receiving distance (In the open area)

• Self powered button design. This button uses kinetic energy. No battery required

Specification:

• Receiving distance: 150 M (in open area)

• Volume: 4 files 0-110DB, ringtones: 51 kinds

• Rated voltage: AC 110~ 240V ,50-60Hz

• Working frequency: 433MHz.

• Receiver standby power:< 0.5W

• Receiver size: 100 x 66 x 30 mm

• Button size: 75 x 45 x 18 mm