Adjustable Volume Wired Doorbell with Music Battery Powered

FAQ:
question 1: Do you want to hold the doorbell button all the time, or do you only need to press it once and it will ring?
A: You only need to press it once, and a piece of music will be played all the time.
Question 2: How long will the concert be held?
Answer: The ringing time depends on the length of the music. There are a few seconds of Ding Dong sound and 20 to 30 seconds of pure music. Please choose the appropriate music according to the length of the ringing you need.
Question 3: How to choose music?
Answer: There is a switch on the main body of the doorbell to select music. You can select different music by pressing the button.
Question 4: Can the wire be Long?
A: It can be Long. After actual testing, generally, ordinary wires about 20 meters are added to the button switch, and there is no problem!
Question 5: can the volume be adjusted?
A: Yes, the volume can be adjusted to a large or small size according to personal needs.
  Music doorbell with 180cm long line (If the 180-cm wire is not long enough, additional ordinary wire Long can be connected)
color: White
brand: Vientiane brand
packaging: normal plastic card case packaging
line length: Vientiane doorbell is about 180cm (1.8 m),
size: doorbell length and width are 9.3cm * 9.8cm (button length and width are 7cm * 4cm)
sound: music ringtone ( 36 pure music ringtones for choice, there is a button to select music on the doorbell)
power supply: use 3AA battery/No. 5 battery self-provided battery, no battery!
Note: Wired doorbell is a low current and low energy consumption product. Do not use alkaline batteries such as Nanfu.
Advantages of wired doorbell:
(1) power saving, no power consumption without pressing, wireless doorbell has standby energy consumption.
(2) No serial code. If the wireless doorbell has the same channel as the neighbor doorbell or Digital devices, routers will often misreport.
(3) Long distance, wired doorbell can be self-wired up to 20 meters, wireless doorbell generally effective distance is only a few meters.
(4) Environmental-Friendly, no radiation. The longer the remote control distance of the wireless doorbell, the greater the radiation.