Wireless door bell

Key specifications:

Working frequency: 433 MHz

Outdoors piece

Power: DC 5V

Working current:  < 350 MA

Standby current: < 130 UA

Transmission distance: 800 meters

Water & dust proof: IP55

Dimension: 135 x 58 x 30 mm

Indoors piece

Battery: 1200mAh

Power: DC 5V

Working current:  < 350 MA

Standby current:  < 800 UA

Dimension: 129 x 53 x 23 mm