Features:

1. 55 Bell Chimes Available: user can choose the tone as he like.

2. Simple Operation: comes with 2 transmitter and 1 receiver, easy to pair the transmitter and receiver.

3. Memory Function: the chime user set before won't change even the power is cut off.

4. 300M Wireless working Distance: Stable signal transmission and good anti-interference performance.

5. IP55 Waterproof: built-in waterproof sealing ring can protect the elements inside against water and dust to prolong its service life.

6. 5 Levels Sound Volume Adjustable: adjustable from 0-110dB, the mute mode can offers user with better usage experience.

7. Touch Button: the interval between two bells is about 20 seconds, no need to keep pressing the button all the time.

8. SOS Caller Function: With a hanging hole for being connected to neck strap or wrist strap, elder people can use it as a caller for help.

Specification:

Material: Plastic

Color: Black

Waterproof Grade: IP55

Working Temperature: -30℃ to +70℃

Working Distance: 300m (Without Barrier)

Working Frequency: 433.92MHz

Sound Volume: 0-110dB (5 Levels Adjustable, With Mute Mode)

Receiver Voltage: 110-260V / 50-60Hz

Certification: CE, ROHS, FCC, PSE, TELEC 

Transmitter Battery: 12V 23A Alkaline Zinc Manganese Battery (built-in)

Size: 

Receiver(Length*Width*Thickness): 2.36*2.36*0.59in

Transmitter(Diameter*Thickness): 3.07*1.97in

Plug Type: US, EU, (Optional)

Package List:

1 x Receiver

1 x Transmitter

1 x Manual