• IP44 Waterproof: Designed to withstand various weather conditions
• 38 Ringtone Options: Choose your favorite doorbell melody
• Adjustable Volume: Four levels of volume control, including mute option
• 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:

• Operating Voltage: AC100V-230V 50/60Hz
• Operating Frequency: 433.92MHz
• Standby Power Consumption: 0.25W
• Music: 38 tunes
• Volume: 3 levels + mute
• Adjustable Volume: ≥50dB/1m
• Reception Distance: ≥150 meters (open and unobstructed)
• Receiver Operating Temperature: -10℃ to +45℃
• Transmitter Operating Temperature: -20℃ to +60℃
• Receiver Size: 78 x 54 x 45mm
• Transmitter Size: 66 x 40 x 40mm

Note: The transmitter does not require batteries; it is self-powered by pressing.