Features:
– Advanced wireless transceiver technology for stable performance
– High-quality voice processing technology for clear sound
– Multi-purpose as a doorbell and anti-theft device
– Infrared detector for welcoming guests
– Door sensor alarm for added security
– Long operating range of up to 150m
– 32 selectable tunes and 4 adjustable volume levels
– Easy installation without the need for drilling

Specifications:
– Connection Type: Wireless
– Power: Electric Supply
– Display: None
– Intercom: No
– Alarm: No
– Certification: CE
– Smart home platform: None
– Operating Voltage: AC 100-220V
– Working Current: <100 mA
– Wireless Frequency: 433 MHz
– Operating Temperature: -10C to 50C
– Wireless Distance: Up to 150m

Package Includes:
– 1 Wireless Doorbell Transmitter
– 1 Receiver
– Door Sensor

Transform your home security with the Fuers M557 Wireless Doorbell. With advanced technology, clear sound, and multiple security features, this doorbell is a versatile addition to any home. Enjoy a welcoming tune selection, easy installation, and peace of mind with the infrared detector and door sensor alarm. Upgrade your home security today!