Wireless Doorbell User Manual
Model: M520+F55


Content will vary according to your kit
The push button supplied with this kit is pre-programmed to operate with the doorbell. If it is not, see “Connect a Push Button” on page 5
Please note the following safety warnings:

AC Powered Receiver
① Music Control, ④ LED light, ② Volume Control, ⑤ Speaker, ③ Plug

Waterproof Transmitter

Press the push button to test whether it is paired with the doorbell. The doorbell will light up and ring. If it does not, see "Connect a Push Button" on page 5.
Press the
1s. (when the power is cut off, and power is restored again, the volume will be automatically adjusted to maximum)
Press the
1s: Loop tones in sequence and play the current tones.
Long press 5s
: Change tones loop direction. Press and hold the
to power on: The doorbell receiver will turn on after beeps ten times, indicating that the doorbell receiver will restore the track to the first song, and all the buttons are not deleted.

You can connect up to 20 accessories to your doorbell, including other push buttons, window or door opening sensors, and motion sensors.
on the receiver for 5s, the receiver will beeps once, which means receiver get into pairing mode.
or leave it 20s without any operation, the doorbell will exit the pairing mode.

abd
button for about 5s until the receiver beeps once, which means receiver get into pairing mode.
or leave it 20s without any operation, the doorbell will exit the pairing mode.

Adding the additional buttons/receivers please according to the above steps.
Note: Pair and set only one transmitter at a time to avoid interference and ensure successful operation.
To return all settings to their default settings Hold down
and plug it into an outlet. After playing the beep 10 times, all settings will return to factory defaults.
Hold down
and Plug in

Choose a location that is not near a heat source or on something that moves (like a door). For non-mounting locations, choose a place where the doorbell will be easy to see and hear.
Plug-in receiver: Just plug receiver into standard outlet in room.
IMPORTANT: Before installation, please test if the operating range you choose is working and set music if needed. Before you drill any hole in the wall, please make sure there are not cables or pipes. To install you will require a drill and cross-headed screwdriver.


If you are not mounting the push button to the wall, place it where you want it.



Open the battery cover and install the CR2032 battery.

| Doorbell | Push Button | |
|---|---|---|
| Operating Temperature | -4°F to 140°F | -4°F to 140°F |
| Radio Frequency | 433 MHz | 433 MHz |
| Range (open field) | 1,000 ft | 1,000 ft |
| Sound Level (typical) | 0-120 dB | - |
| Battery Type | Plug in | CR2032 |
| Battery Life (5 activations/day) | Up to 5 years | Up to 3 years |
| Rain Proof | N/A | IP55 |
The doorbell does not work
Range and Interference Notes
This product is warranted to the original purchaser only for a period of 1 year from the date of purchase for products damaged due to defect in workmanship and materials. Proof of purchase is required to obtain warranty service. Warranty is for replacement only. No service parts are available for these products. No other warranties are expressed or implied. Batteries are not covered under this warranty.
For warranty service, please contact SECRUI Customer Service by email: [email protected]
IMPORTANT: PLEASE KEEP THESE INSTRUCTIONS FOR FUTURE REFERENCE WHEN REPLACING BATTERIES
FCC ID: 2AZI3-F55
Made In China