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The product is a 433MHz receiver module designed with the Holtek voice MCU HT68RV035 and RF IC BC2161. It includes four buttons, which functions can be defined by users, an LED indicator, and a 8Ω/0.25W speaker. Furthermore, Holtek offers the development platform, Wireless Doorbell Workshop. Users can easily configure parameters and edit voices/ringtones through the platform, shortening development time.
⬥ The product is recommended to be used with the BM23P101-T41.
The product features four buttons, each of which can be configured for both long-press and short-press actions. We offer a total of 9 functions, listed below.
Function
Description
none
No function
(Both the long-press and short-press actions
of the button must be set to "none")
Play/Stop Current
Play/Stop
Reset to First
Set the current voice as the first one and then play it
Play Next
Play the next one
Play Direct
Play voices
Voice/Sentence Switch
Play mode switch: single and sentence
Volume+
Volume +
Volume-
Volume -
RF Pairing
Enter RF pairing mode
Pairing mode
Configure one of the button’s functions for RF pairing and set the LED lighting mode.
Program the configuration into the MCU.
Press the pairing button and check the LED status to confirm if the product successfully enters pairing mode.
For example, if you configure the LED lighting mode to flash 4 times per second for RF pairing mode, the LED will blink 4 times every second after pressing the button, indicating that the product has successfully entered pairing mode.
Press the button on the transmitter device for pairing.
If the product plays a voice after pressing the button on the transmitter device, it indicates a successful pairing.
This product can pair with up to 4 transmitters simultaneously. If a fifth transmitter is paired, the first paired transmitter will be replaced, and so on.
HARDWARE OVERVIEW
PIN DESCRIPTION
Pin
Name
Function
1
L
AC power L (live wire) input
2
N
AC power N (neutral wire) input
3
B1
Audio signal output interface 1
4
B2
Audio signal output interface 2
5
MISO
Programming data pin:
master input and slave output data line
6
VDD
Positive power input
7
SCK
Programming clock line
8
NC
—
9
MOSI
Programming data pin:
master output and slave input data line
10
SCK
Programming clock line
11
NC
—
12
NC
—
13
NC
—
14
SDA
Programming data line
15
VPP
OTP ROM programming power supply (8.5V)
16
GND
Ground
RESOURCES
MCU: Holtek HT68RV035, Voice Peripheral OTP MCU, including datasheet, package information, etc.
IC: Holtek BC2302C, Sub-1GHz Low-IF OOK RF Receiver, including datasheet, package information, etc.
The Wireless Doorbell Workshop is a development platform for wireless doorbell applications. Users can easily edit ringtones/voices and configure parameters through the platform. After editing, the settings can be downloaded to the wireless doorbell products (transmitter and receiver modules), shortening the development time.
