• IP44 Waterproof: Designed to withstand various weather conditions
• 38 Ringtone Options: Choose your favorite doorbell melody
• Adjustable Volume: There are 4 levels of volume control
• Strong Signal: It can penetrate 3-4 walls and has a wireless range of up to 150 meters in an open area, great for large houses including villas, apartments, offices, shops, warehouses, etc.
• Not only a doorbell but also a pager: When the elderly, babies and pregnant women sleeping alone have needs, press the transmitter and the bell will ring

Specifications:

• Working voltage: AC100V-230V 50/60Hz
• Working frequency: 433.92MHz
• Standby power consumption: 0.25W
• Music: 38 songs
• Volume: 4 levels
• Controllable volume: ≥50dB/1m
• Receiving distance: ≥150 meters (open space)
• Receiver operating temperature: -10℃~+45℃
• Transmitter operating temperature: -20℃~+60℃
• Receiver dimensions: 95 x 54 x 68mm
• Transmitter size: 80 x 50 x 28mm
• Transmitter: no need for battery