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Door Chime Bistee Wireless Door Alarm Contact Sensor Door,TECKNET Wireless Doorbell, Self-Powered Doorbell, 0-110db,Door Chime,SanJie Wireless Door Sensor Chime When Door Opens,TECKNET Wireless Doorbell, Self-Powered Doorbell, 0-110db,SECRUI Wireless Doorbell with 2 Buttons – Doorbell Kits for,

• Adopts a highly sensitive receiver to notify you from a distance
• No more need to take an economical and durable battery
• Easy and easy to install, so you can rest assured even in a wide home
• Press the transmitter on the front door chime to make a call sound and instantly notice it in an emergency
• Wireless chime that can be easily installed without wiring as a call chime in warehouses etc
• With the doorbell function, you will never miss an important visitor
• The transmitter converts energy from the finger press, making installation much easier, the receiver is socket, the transmitter is sent to the wall, and the doorbell begins work

Never miss a chime sound anywhere in your house.
Indoor door chime. Useful for homes, baths, nursing sites, restaurants, and offices, warehouses, and more.
This doorbell call set adopts a highly sensitive receiver that can be used in building buildings, and can be used with a stable reception on walls, wooden doors, steel doors, etc.
Specifications:
Color: White
Weight: 16.2 oz (462
Size: Receiver: 2.0 x 0.8 x 3.3 inches (5 x 2 x 8.3 cm). Transmitter 3.0 x 1.0 x 3.1 inches
Waterproof level: transmitter waterproof grade IP44
Working temperature: -30°C to +70°C
Receiver Voltage: 110-260V/50-60Hz (wide voltage).
Indicator Color: Blue
Ring Noise: 58 optional
Volume: 0-110 decibels with 4 levels adjustable

Package includes:
2 x Receivers
3 x Transmitters
1x double sided tape
1 x Manual (English language not guaranteed).